app-forensics/rkhunter: fix warnings w/ grep-3.8

Closes: https://bugs.gentoo.org/895176
Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 799 insertions, 0 deletions

diff --git a/app-forensics/rkhunter/files/rkhunter-1.4.6-grep-3.8.patch b/app-forensics/rkhunter/files/rkhunter-1.4.6-grep-3.8.patch
new file mode 100644
index 000000000000..ae1ae9feb05c
--- /dev/null
+++ b/app-forensics/rkhunter/files/rkhunter-1.4.6-grep-3.8.patch
@@ -0,0 +1,735 @@
+https://sourceforge.net/p/rkhunter/bugs/176/
+https://bugs.gentoo.org/895176
+
+--- a/rkhunter
++++ b/rkhunter
+@@ -70,7 +70,7 @@
+ # we exec to log everything to the debug file.
+ #
+ 
+-if [ -n "`echo \"$*\" | grep '\-\-debug'`" ]; then
++if [ -n "`echo \"$*\" | grep -- '--debug'`" ]; then
+ 	RKHDEBUGFILE=""
+ 	RKHDEBUGBASE="/tmp/rkhunter-debug"
+ 
+@@ -181,7 +181,7 @@
+ # used. If it is, then some typical grep tests will fail.
+ #
+ 
+-if [ "`echo \"rkh-grep-test\" | grep '^\+'`" = "rkh-grep-test" ]; then
++if [ "`echo \"rkh-grep-test\" | grep '^+'`" = "rkh-grep-test" ]; then
+ 	alias grep='grep -E'
+ fi
+ 
+@@ -948,9 +948,9 @@
+ 		#
+ 
+ 		if [ "${OPT_NAME}" = "SHARED_LIB_WHITELIST" ]; then
+-			RKHTMPVAR=`echo "${OPT_VALUE}" | egrep '(^|[^\\])[][?*]'`
++			RKHTMPVAR=`echo "${OPT_VALUE}" | grep -E '(^|[^\\])[][?*]'`
+ 		else
+-			RKHTMPVAR=`echo "${OPT_VALUE}" | egrep '(^|[^\\])[][?*{}]'`
++			RKHTMPVAR=`echo "${OPT_VALUE}" | grep -E '(^|[^\\])[][?*{}]'`
+ 		fi
+ 
+ 		if [ -n "${RKHTMPVAR}" ]; then
+@@ -989,7 +989,7 @@
+ # The code is left here since we may need something very similar for overloaded options.
+ #   overloaded options - ALLOWPROCDELFILE PORT_PATH_WHITELIST RTKT_FILE_WHITELIST
+ #		if [ "${OPT_NAME}" = "BINDIR" ]; then
+-#			if [ -n "`echo \"${FNAME}\" | grep '^\+'`" ]; then
++#			if [ -n "`echo \"${FNAME}\" | grep '^+'`" ]; then
+ #				FNAME=`echo "${FNAME}" | cut -c2-`
+ #			fi
+ #		fi
+@@ -1000,7 +1000,7 @@
+ 		# Also check that '/' has not been set.
+ 		#
+ 
+-		if [ -n "`echo \"${FNAME}\" | egrep '(^[./]*$)|[;&]|/\.\./'`" ]; then
++		if [ -n "`echo \"${FNAME}\" | grep -E '(^[./]*$)|[;&]|/\.\./'`" ]; then
+ 			ERRCODE=1
+ 
+ 			echo "Invalid ${OPT_NAME} configuration option: Invalid pathname: ${FNAME}"
+@@ -1134,7 +1134,7 @@
+ 				#
+ 
+ 				if [ "${OPT_NAME}" = "SHARED_LIB_WHITELIST" ]; then
+-					if [ -n "`echo \"${FNAME}\" | egrep '\\$\\{?(ORIGIN|LIB|PLATFORM)\\}?'`" ]; then
++					if [ -n "`echo \"${FNAME}\" | grep -E '\\$\\{?(ORIGIN|LIB|PLATFORM)\\}?'`" ]; then
+ 						continue
+ 					fi
+ 				fi
+@@ -2522,7 +2522,7 @@
+ 		PREPEND_PATHS=""
+ 
+ 		for DIR in ${BINPATHS}; do
+-			if [ -n "`echo ${DIR} | grep '^\+'`" ]; then
++			if [ -n "`echo ${DIR} | grep '^+'`" ]; then
+ 				DIR=`echo ${DIR} | cut -c2-`
+ 				PREPEND_PATHS="${PREPEND_PATHS} ${DIR}"
+ 			fi
+@@ -2532,7 +2532,7 @@
+ 
+ 
+ 		for DIR in ${PREPEND_PATHS} ${RKHROOTPATH} ${BINPATHS}; do
+-			if [ -n "`echo ${DIR} | grep '^\+'`" ]; then
++			if [ -n "`echo ${DIR} | grep '^+'`" ]; then
+ 				# These will already be in PREPEND_PATHS.
+ 				continue
+ 			elif [ -z "`echo ${DIR} | grep '^/'`" ]; then
+@@ -3848,7 +3848,7 @@
+ 		#
+ 
+ 		for RKHTMPVAR2 in ${RKHTMPVAR}; do
+-			if [ -n "`echo \"${RKHTMPVAR2}\" | egrep -i '^(TCP|UDP):[1-9][0-9]*$'`" ]; then
++			if [ -n "`echo \"${RKHTMPVAR2}\" | grep -E -i '^(TCP|UDP):[1-9][0-9]*$'`" ]; then
+ 				PROTO=`echo ${RKHTMPVAR2} | cut -d: -f1 | tr '[:lower:]' '[:upper:]'`
+ 				PORT=`echo ${RKHTMPVAR2} | cut -d: -f2`
+ 
+@@ -3899,7 +3899,7 @@
+ 				PROTO=""
+ 
+ 				# Dig out the protocol and port number, if present.
+-				if [ -n "`echo \"${RKHTMPVAR2}\" | egrep -i '.:(TCP|UDP):[1-9][0-9]*$'`" ]; then
++				if [ -n "`echo \"${RKHTMPVAR2}\" | grep -E -i '.:(TCP|UDP):[1-9][0-9]*$'`" ]; then
+ 					PROTO=`echo "${RKHTMPVAR2}" | sed -e 's/^.*:\([a-zA-Z]*\):[1-9][0-9]*$/\1/'`
+ 					PORT=`echo "${RKHTMPVAR2}" | sed -e 's/^.*:\([1-9][0-9]*\)$/\1/'`
+ 
+@@ -4839,7 +4839,7 @@
+ 		fi
+ 	fi
+ 
+-	if [ -n "`echo \"${HASH_FUNC}\" | egrep -i '^(MD5|SHA1|SHA224|SHA256|SHA384|SHA512|RIPEMD160|WHIRLPOOL|NONE)$'`" ]; then
++	if [ -n "`echo \"${HASH_FUNC}\" | grep -E -i '^(MD5|SHA1|SHA224|SHA256|SHA384|SHA512|RIPEMD160|WHIRLPOOL|NONE)$'`" ]; then
+ 		HASH_FUNC=`echo "${HASH_FUNC}" | tr '[:lower:]' '[:upper:]'`
+ 	fi
+ 
+@@ -6412,7 +6412,7 @@
+ 		OSNAME="${OSNAME} `sw_vers 2>/dev/null | grep '^ProductVersion:' | sed -e 's/ProductVersion:[ 	]*//'`"
+ #		OSNAME="${OSNAME} `sysctl kern.version 2>/dev/null | sed -e 's/^kern.version = //' | cut -d: -f1`"
+ 
+-		if [ -n "`sysctl -a 2>/dev/null | egrep '^(hw\.optional\.x86_64|hw\.optional\.64bitops|hw\.cpu64bit_capable).*1$'`" ]; then
++		if [ -n "`sysctl -a 2>/dev/null | grep -E '^(hw\.optional\.x86_64|hw\.optional\.64bitops|hw\.cpu64bit_capable).*1$'`" ]; then
+ 			OSNAME="${OSNAME} (64-bit capable)"
+ 		fi
+ 		;;
+@@ -6708,7 +6708,7 @@
+ 						# this is what RPM does).
+ 						#
+ 
+-						RPM_QUERY_RESULT=`echo "${RPM_QUERY_RESULT_ARCH}" | egrep ':(x86_64|ia64):' 2>/dev/null | tail ${TAIL_OPT}1`
++						RPM_QUERY_RESULT=`echo "${RPM_QUERY_RESULT_ARCH}" | grep -E ':(x86_64|ia64):' 2>/dev/null | tail ${TAIL_OPT}1`
+ 
+ 						test -z "${RPM_QUERY_RESULT}" && RPM_QUERY_RESULT=`echo "${RPM_QUERY_RESULT_ARCH}" | tail ${TAIL_OPT}1`
+ 
+@@ -6883,7 +6883,7 @@
+ 					if [ -n "${PKGNAME}" ]; then
+ 						if [ -f "/var/lib/dpkg/info/${PKGNAME}.md5sums" ]; then
+ 							FILNAM=`echo "${FNAME}" | sed -e 's:^/::; s:\.:\\\.:g'`
+-							SYSHASH=`egrep "( |\./)${FILNAM}\$" "/var/lib/dpkg/info/${PKGNAME}.md5sums" 2>/dev/null | cut -d' ' -f1`
++							SYSHASH=`grep -E "( |\./)${FILNAM}\$" "/var/lib/dpkg/info/${PKGNAME}.md5sums" 2>/dev/null | cut -d' ' -f1`
+ 							test -n "${SYSHASH}" && FILE_IS_PKGD=1
+ 						fi
+ 					fi
+@@ -6925,7 +6925,7 @@
+ 					SYSHASH=""
+ 					RKHTMPVAR=`${HASH_CMD} "${FNAME}" 2>&1`
+ 
+-					if [ -n "`echo \"${RKHTMPVAR}\" | egrep 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
++					if [ -n "`echo \"${RKHTMPVAR}\" | grep -E 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
+ 						DEPENDENCY_ERR=1
+ 						RKHTMPVAR=`echo "${RKHTMPVAR}" | tr '\n' ':' | sed -e 's/:$//'`
+ 					else
+@@ -7311,13 +7311,13 @@
+ 
+ 	case $MIRRORS_MODE in
+ 	0)
+-		MIRROR=`egrep -i '^(local|remote|mirror)=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}1`
++		MIRROR=`grep -E -i '^(local|remote|mirror)=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}1`
+ 		;;
+ 	1)
+-		MIRROR=`egrep -i '^local=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}1`
++		MIRROR=`grep -E -i '^local=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}1`
+ 		;;
+ 	2)
+-		MIRROR=`egrep -i '^remote=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}1`
++		MIRROR=`grep -E -i '^remote=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}1`
+ 		;;
+ 	esac
+ 
+@@ -7337,13 +7337,13 @@
+ 
+ 		case $MIRRORS_MODE in
+ 		0)
+-			MIRROR=`egrep -i '^(local|remote|mirror)=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}$N | tail ${TAIL_OPT}1 | cut -d= -f2-`
++			MIRROR=`grep -E -i '^(local|remote|mirror)=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}$N | tail ${TAIL_OPT}1 | cut -d= -f2-`
+ 			;;
+ 		1)
+-			MIRROR=`egrep -i '^local=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}$N | tail ${TAIL_OPT}1 | cut -d= -f2-`
++			MIRROR=`grep -E -i '^local=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}$N | tail ${TAIL_OPT}1 | cut -d= -f2-`
+ 			;;
+ 		2)
+-			MIRROR=`egrep -i '^remote=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}$N | tail ${TAIL_OPT}1 | cut -d= -f2-`
++			MIRROR=`grep -E -i '^remote=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" 2>/dev/null | head ${HEAD_OPT}$N | tail ${TAIL_OPT}1 | cut -d= -f2-`
+ 			;;
+ 		esac
+ 
+@@ -7370,7 +7370,7 @@
+ 	# Next get the remaining mirrors.
+ 	#
+ 
+-	OTHERMIRRORS=`egrep -i '^(local|remote|mirror)=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" | grep -v "^${MIRROR}\$"`
++	OTHERMIRRORS=`grep -E -i '^(local|remote|mirror)=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" | grep -v "^${MIRROR}\$"`
+ 
+ 
+ 	#
+@@ -7459,13 +7459,13 @@
+ 
+ 		case $MIRRORS_MODE in
+ 		0)
+-			MIRROR_COUNT=`egrep -i '^(local|remote|mirror)=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" | wc -l | tr -d ' '`
++			MIRROR_COUNT=`grep -E -i '^(local|remote|mirror)=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" | wc -l | tr -d ' '`
+ 			;;
+ 		1)
+-			MIRROR_COUNT=`egrep -i '^local=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" | wc -l | tr -d ' '`
++			MIRROR_COUNT=`grep -E -i '^local=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" | wc -l | tr -d ' '`
+ 			;;
+ 		2)
+-			MIRROR_COUNT=`egrep -i '^remote=https?://[-A-Za-z0-9\+@#/%=_:,.]*[-A-Za-z0-9\+@#/%=_]$' "${DB_PATH}/mirrors.dat" | wc -l | tr -d ' '`
++			MIRROR_COUNT=`grep -E -i '^remote=https?://[-A-Za-z0-9+@#/%=_:,.]*[-A-Za-z0-9+@#/%=_]$' "${DB_PATH}/mirrors.dat" | wc -l | tr -d ' '`
+ 			;;
+ 		esac
+ 
+@@ -7991,7 +7991,7 @@
+ 	# Now check to see if any unknown options have been configured.
+ 	#
+ 
+-	RKHTMPVAR=`egrep -h -v '^[ 	]*(#|$)' ${CONFIGFILE} ${LOCALCONFIGFILE} ${LOCALCONFDIRFILES}`
++	RKHTMPVAR=`grep -E -h -v '^[ 	]*(#|$)' ${CONFIGFILE} ${LOCALCONFIGFILE} ${LOCALCONFDIRFILES}`
+ 
+ 	IFS=$IFSNL
+ 
+@@ -9587,7 +9587,7 @@
+ 		    rpc.nfsd:tcp.log:Sniffer installed
+ 		    sshd:/dev/ptyxx:OpenBSD Rootkit
+ 		    sshd:/.config:SHV4 Rootkit
+-		    sshd:+\\$.*\\$\!.*\!\!\\$:Backdoored SSH daemon installed
++		    sshd:+\\$.*\\$!.*!!\\$:Backdoored SSH daemon installed
+ 		    sshd:backdoor.h:Trojaned SSH daemon
+ 		    sshd:backdoor_active:Trojaned SSH daemon
+ 		    sshd:magic_pass_active:Trojaned SSH daemon
+@@ -10712,7 +10712,7 @@
+ 		done
+ 
+ 
+-		if [ -n "`echo \"${RKHTMPVAR}\" | egrep 'libsafe|missing|empty'`" ]; then
++		if [ -n "`echo \"${RKHTMPVAR}\" | grep -E 'libsafe|missing|empty'`" ]; then
+ 			display --to LOG --type WARNING --nl PROPUPD_WARN
+ 		fi
+ 
+@@ -10964,7 +10964,7 @@
+ 
+ 						FILE_IS_PKGD=1
+ 
+-						PKGNAME=`echo "${PKGNAME_ARCH}" | egrep '\.(x86_64|ia64)$' 2>/dev/null | tail ${TAIL_OPT}1`
++						PKGNAME=`echo "${PKGNAME_ARCH}" | grep -E '\.(x86_64|ia64)$' 2>/dev/null | tail ${TAIL_OPT}1`
+ 
+ 						test -z "${PKGNAME}" && PKGNAME=`echo "${PKGNAME_ARCH}" | tail ${TAIL_OPT}1`
+ 
+@@ -11163,7 +11163,7 @@
+ 					if [ -n "${PKGNAME}" -a -f "/var/lib/dpkg/info/${PKGNAME}.md5sums" ]; then
+ 						FNGREP=`echo "${FNAMEGREP}" | sed -e 's:^/::'`
+ 
+-						SYSHASH=`egrep "( |\./)${FNGREP}\$" "/var/lib/dpkg/info/${PKGNAME}.md5sums" | cut -d' ' -f1`
++						SYSHASH=`grep -E "( |\./)${FNGREP}\$" "/var/lib/dpkg/info/${PKGNAME}.md5sums" | cut -d' ' -f1`
+ 
+ 						if [ -n "${SYSHASH}" ]; then
+ 							FILE_IS_PKGD=1
+@@ -11172,7 +11172,7 @@
+ 							if [ "${RKHTMPVAR}" != "${SYSHASH}" ]; then
+ 								PKGMGR_VERIFY_RESULT="5"
+ 
+-								if [ -n "`${PKGMGR_MD5_HASH} "${FNAME}" 2>&1 | egrep 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
++								if [ -n "`${PKGMGR_MD5_HASH} "${FNAME}" 2>&1 | grep -E 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
+ 									DEPENDENCY_ERR=1
+ 								fi
+ 							fi
+@@ -11221,7 +11221,7 @@
+ 							if [ "${RKHTMPVAR}" != "${SYSHASH}" ]; then
+ 								PKGMGR_VERIFY_RESULT="5"
+ 
+-								if [ -n "`${PKGMGR_MD5_HASH} "${FNAME}" 2>&1 | egrep 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
++								if [ -n "`${PKGMGR_MD5_HASH} "${FNAME}" 2>&1 | grep -E 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
+ 									DEPENDENCY_ERR=1
+ 								fi
+ 							fi
+@@ -11252,7 +11252,7 @@
+ 							if [ "${RKHTMPVAR}" != "${SYSHASH}" ]; then
+ 								PKGMGR_VERIFY_RESULT="5"
+ 
+-								if [ -n "`${PKGMGR_SHA_HASH} "${FNAME}" 2>&1 | egrep 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
++								if [ -n "`${PKGMGR_SHA_HASH} "${FNAME}" 2>&1 | grep -E 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
+ 									DEPENDENCY_ERR=1
+ 								fi
+ 							fi
+@@ -11295,7 +11295,7 @@
+ 						fi
+ 					fi
+ 
+-					if [ -z "`echo \"${PKGMGR_VERIFY_RESULT}\" | egrep '5|(^..\?)'`" ]; then
++					if [ -z "`echo \"${PKGMGR_VERIFY_RESULT}\" | grep -E '5|(^..\?)'`" ]; then
+ 						HASH_TEST_PASSED=1
+ 					else
+ 						TEST_RESULT="${TEST_RESULT} verify:hashchanged"
+@@ -11349,7 +11349,7 @@
+ 							SYSHASH=`${HASH_CMD} "${FNAME}" 2>/dev/null | cut -d' ' -f $HASH_FLD_IDX`
+ 
+ 							if [ -z "${SYSHASH}" ]; then
+-								if [ -n "`${HASH_CMD} "${FNAME}" 2>&1 | egrep 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
++								if [ -n "`${HASH_CMD} "${FNAME}" 2>&1 | grep -E 'prelink.* (dependenc|adjusting unfinished)'`" ]; then
+ 									if [ "${RKHHASH}" = "ignore-prelink-dep-err" ]; then
+ 										SYSHASH="${RKHHASH}"
+ 										display --to LOG --type INFO FILE_PROP_IGNORE_PRELINK_DEP_ERR "`name2text \"${FNAME}\"`"
+@@ -11445,7 +11445,7 @@
+ 					#
+ 
+ 					if [ $FILE_IS_PKGD -eq 1 ]; then
+-						echo "${PKGMGR_VERIFY_RESULT}" | egrep 'M|(^.\?)' >/dev/null && TEST_RESULT="${TEST_RESULT} verify:permchanged"
++						echo "${PKGMGR_VERIFY_RESULT}" | grep -E 'M|(^.\?)' >/dev/null && TEST_RESULT="${TEST_RESULT} verify:permchanged"
+ 					else
+ 						RKH_CC2=`expr $RKH_CC + 2`
+ 
+@@ -11465,7 +11465,7 @@
+ 					#
+ 
+ 					if [ $FILE_IS_PKGD -eq 1 ]; then
+-						echo "${PKGMGR_VERIFY_RESULT}" | egrep 'U|(^.....\?)' >/dev/null && TEST_RESULT="${TEST_RESULT} verify:uidchanged"
++						echo "${PKGMGR_VERIFY_RESULT}" | grep -E 'U|(^.....\?)' >/dev/null && TEST_RESULT="${TEST_RESULT} verify:uidchanged"
+ 					else
+ 						RKH_CC2=`expr $RKH_CC + 3`
+ 
+@@ -11485,7 +11485,7 @@
+ 					#
+ 
+ 					if [ $FILE_IS_PKGD -eq 1 ]; then
+-						echo "${PKGMGR_VERIFY_RESULT}" | egrep 'G|(^......\?)' >/dev/null && TEST_RESULT="${TEST_RESULT} verify:gidchanged"
++						echo "${PKGMGR_VERIFY_RESULT}" | grep -E 'G|(^......\?)' >/dev/null && TEST_RESULT="${TEST_RESULT} verify:gidchanged"
+ 					else
+ 						RKH_CC2=`expr $RKH_CC + 4`
+ 
+@@ -11525,7 +11525,7 @@
+ 					#
+ 
+ 					if [ $FILE_IS_PKGD -eq 1 ]; then
+-						if [ -z "`echo \"${PKGMGR_VERIFY_RESULT}\" | egrep 'S|(^\?)'`" ]; then
++						if [ -z "`echo \"${PKGMGR_VERIFY_RESULT}\" | grep -E 'S|(^\?)'`" ]; then
+ 							SIZE_TEST_PASSED=1
+ 						else
+ 							TEST_RESULT="${TEST_RESULT} verify:sizechanged"
+@@ -11553,7 +11553,7 @@
+ 					#
+ 
+ 					if [ $FILE_IS_PKGD -eq 1 ]; then
+-						echo "${PKGMGR_VERIFY_RESULT}" | egrep 'T|(^.......\?)' >/dev/null && TEST_RESULT="${TEST_RESULT} verify:dtmchanged"
++						echo "${PKGMGR_VERIFY_RESULT}" | grep -E 'T|(^.......\?)' >/dev/null && TEST_RESULT="${TEST_RESULT} verify:dtmchanged"
+ 					elif [ $PRELINKED -eq 0 -o $FILE_IS_PKGD -eq 0 ]; then
+ 						RKH_CC2=`expr $RKH_CC + 6`
+ 
+@@ -11574,7 +11574,7 @@
+ 
+ 					if [ -h "${FNAME}" ]; then
+ 						if [ $FILE_IS_PKGD -eq 1 ]; then
+-							if [ -n "`echo \"${PKGMGR_VERIFY_RESULT}\" | egrep 'L|(^....\?)'`" ]; then
++							if [ -n "`echo \"${PKGMGR_VERIFY_RESULT}\" | grep -E 'L|(^....\?)'`" ]; then
+ 								if [ $HAVE_READLINK -eq 1 ]; then
+ 									# Check the link target to see if it is whitelisted.
+ 
+@@ -11720,7 +11720,7 @@
+ 						RKHTMPVAR=`${LSATTR_CMD} "${FNAME}" 2>&1 | cut -d' ' -f1 | grep 'i'`
+ 					fi
+ 				else
+-					RKHTMPVAR=`ls -lno "${FNAME}" 2>&1 | ${AWK_CMD} '{ print $5 }' | egrep 'uchg|schg|sappnd|uappnd|sunlnk|sunlink|schange|simmutable|sappend|uappend|uchange|uimmutable'`
++					RKHTMPVAR=`ls -lno "${FNAME}" 2>&1 | ${AWK_CMD} '{ print $5 }' | grep -E 'uchg|schg|sappnd|uappnd|sunlnk|sunlink|schange|simmutable|sappend|uappend|uchange|uimmutable'`
+ 				fi
+ 
+ 				#
+@@ -11768,9 +11768,9 @@
+ 					test -n "${BASENAME_CMD}" && RKHTMPVAR=`${BASENAME_CMD} "${FNAME}"` || RKHTMPVAR=`echo "${FNAME}" | sed -e 's:^.*/::'`
+ 
+ 					if [ "${RKHTMPVAR}" = "rkhunter" ]; then
+-						SYSSCRIPT=`${FILE_CMD} "${FNAME}" 2>&1 | tr -d '\n' | tr '[:cntrl:]' '?' | egrep -i -v '(shell|/bin/sh) script( |,|$)'`
++						SYSSCRIPT=`${FILE_CMD} "${FNAME}" 2>&1 | tr -d '\n' | tr '[:cntrl:]' '?' | grep -E -i -v '(shell|/bin/sh) script( |,|$)'`
+ 					else
+-						SYSSCRIPT=`${FILE_CMD} "${FNAME}" 2>&1 | tr -d '\n' | tr '[:cntrl:]' '?' | egrep -i ' script( |,|$)'`
++						SYSSCRIPT=`${FILE_CMD} "${FNAME}" 2>&1 | tr -d '\n' | tr '[:cntrl:]' '?' | grep -E -i ' script( |,|$)'`
+ 					fi
+ 
+ 					test -n "${SYSSCRIPT}" && TEST_RESULT="${TEST_RESULT} script"
+@@ -12256,7 +12256,7 @@
+ 				# Adding "text" to the egrep below widens scope at the expense of more false-positives and extending running time.
+ 				#
+ 
+-				if [ -n "`echo \"${FTYPE}\" | grep -v -i 'compres' | egrep -i 'execu|reloc|shell|libr|data|obj|text'`" ]; then
++				if [ -n "`echo \"${FTYPE}\" | grep -v -i 'compres' | grep -E -i 'execu|reloc|shell|libr|data|obj|text'`" ]; then
+ 					FOUND=1
+ 					SUSPSCAN_NUM=1; SUSPSCAN_SCORE=0; SUSPSCAN_HITCOUNT=0
+ 					SUSPSCAN_STRINGS=""
+@@ -13151,7 +13151,7 @@
+ 	FOUND=0
+ 
+ 	if [ -n "${KSYMS_FILE}" ]; then
+-		egrep -i 'adore|sebek' "${KSYMS_FILE}" >/dev/null 2>&1 && FOUND=1
++		grep -E -i 'adore|sebek' "${KSYMS_FILE}" >/dev/null 2>&1 && FOUND=1
+ 	fi
+ 
+ 	if [ $FOUND -eq 0 ]; then
+@@ -14061,7 +14061,7 @@
+ 
+ 								FNAMEGREP=`echo "${FNAMEGREP}" | sed -e 's/^|//;'`
+ 
+-								if [ -n "`echo \"${FNAME}\" | egrep \"^(${FNAMEGREP})$\"`" ]; then
++								if [ -n "`echo \"${FNAME}\" | grep -E \"^(${FNAMEGREP})$\"`" ]; then
+ 									PROCWHITELISTED=1
+ 								fi
+ 							else
+@@ -14174,7 +14174,7 @@
+ 			RKHLSOF_FILE="${TEMPFILE}"
+ 			touch "${RKHLSOF_FILE}"
+ 
+-			${LSOF_CMD} -wnlP +c 0 2>&1 | egrep -v ' (FIFO|V?DIR|IPv[46]) ' | sort | uniq >"${RKHLSOF_FILE}"
++			${LSOF_CMD} -wnlP +c 0 2>&1 | grep -E -v ' (FIFO|V?DIR|IPv[46]) ' | sort | uniq >"${RKHLSOF_FILE}"
+ 
+ 			#
+ 			# Now loop through the known suspicious filenames,
+@@ -14376,7 +14376,7 @@
+ 				ROOTKIT_COUNT=`expr $ROOTKIT_COUNT + 1`
+ 
+ 				SEEN=1
+-				FOUND_PROCS=`${UNHIDE_CMD} ${UNHIDE_OPTS} ${RKHTMPVAR} 2>&1 | egrep -v '^(Unhide |yjesus@|http:|Copyright |License |NOTE :|Used options:|\[\*\]|$)'`
++				FOUND_PROCS=`${UNHIDE_CMD} ${UNHIDE_OPTS} ${RKHTMPVAR} 2>&1 | grep -E -v '^(Unhide |yjesus@|http:|Copyright |License |NOTE :|Used options:|\[\*\]|$)'`
+ 
+ 				if [ -z "${FOUND_PROCS}" ]; then
+ 					# Nothing found.
+@@ -14957,7 +14957,7 @@
+ 			IFS=$IFSNL
+ 
+ 			# Get the default enabled services.
+-			for LINE in `egrep '^[ 	]*enabled[ 	]*\+?=' "${FILENAME}"`; do
++			for LINE in `grep -E '^[ 	]*enabled[ 	]*+?=' "${FILENAME}"`; do
+ 				SEEN=1
+ 
+ 				RKHTMPVAR=`echo "${LINE}" | sed -e 's/^.*=//' | tr -s '	' ' '`
+@@ -14975,7 +14975,7 @@
+ 
+ 
+ 			# Get the default disabled services.
+-			for LINE in `egrep '^[ 	]*disabled[ 	]*\+?=' "${FILENAME}"`; do
++			for LINE in `grep -E '^[ 	]*disabled[ 	]*+?=' "${FILENAME}"`; do
+ 				RKHTMPVAR=`echo "${LINE}" | sed -e 's/^.*=//' | tr -s '	' ' '`
+ 
+ 				XINETD_DFLTS_DISABLED="${XINETD_DFLTS_DISABLED} ${RKHTMPVAR}"
+@@ -15024,14 +15024,14 @@
+ 			#
+ 
+ 			if [ -n "${XINETD_DFLTS_ENABLED}" ]; then
+-				if [ -n "`echo \"${XINETD_DFLTS_ENABLED}\" | egrep \"${SVCID}\"`" ]; then
+-					if [ -z "`echo \"${XINETD_DFLTS_DISABLED}\" | egrep \"${SVCID}\"`" ]; then
++				if [ -n "`echo \"${XINETD_DFLTS_ENABLED}\" | grep -E \"${SVCID}\"`" ]; then
++					if [ -z "`echo \"${XINETD_DFLTS_DISABLED}\" | grep -E \"${SVCID}\"`" ]; then
+ 						SEEN=1
+ 						IFS=$IFSNL
+ 						break
+ 					fi
+ 				fi
+-			elif [ -n "`echo \"${XINETD_DFLTS_DISABLED}\" | egrep \"${SVCID}\"`" ]; then
++			elif [ -n "`echo \"${XINETD_DFLTS_DISABLED}\" | grep -E \"${SVCID}\"`" ]; then
+ 				:
+ 			elif [ -z "`echo $DATA | grep 'disable = yes'`" ]; then
+ 				SEEN=1
+@@ -15368,7 +15368,7 @@
+ 			test -f "${DIR}/mod_rootme2.so" && FOUNDFILES="${FOUNDFILES} ${DIR}/mod_rootme2.so"
+ 
+ 			if [ -f "${DIR}/httpd.conf" ]; then
+-				if [ -n "`egrep 'mod_rootme2?\.so' \"${DIR}/httpd.conf\"`" ]; then
++				if [ -n "`grep -E 'mod_rootme2?\.so' \"${DIR}/httpd.conf\"`" ]; then
+ 					FOUNDFILES="${FOUNDFILES} ${DIR}/httpd.conf"
+ 				fi
+ 			fi
+@@ -15671,7 +15671,7 @@
+ 		${FIND_CMD} "${LKM_PATH}" -type f -a \( -name "*.o" -o -name "*.ko" -o -name "*.ko.xz" \) >"${TEMPFILE}" 2>/dev/null
+ 
+ 		for RKHTMPVAR in ${LKM_NAMES}; do
+-			if [ -n "`egrep \"/${RKHTMPVAR}(\.xz)?$\" "${TEMPFILE}"`" ]; then
++			if [ -n "`grep -E \"/${RKHTMPVAR}(\.xz)?$\" "${TEMPFILE}"`" ]; then
+ 				FOUND=1
+ 				FOUNDFILES="${FOUNDFILES} ${RKHTMPVAR}"
+ 			fi
+@@ -15821,10 +15821,10 @@
+ 			if [ -n "`echo \"${LSOFLINE}\" | grep \" ${PROTO} \*:${PORT} \"`" ]; then
+ 				# Process listening for connections from anywhere.
+ 				PID=`echo "${LSOFLINE}" | ${AWK_CMD} '{ print $2 }'`
+-			elif [ -n "`echo \"${LSOFLINE}\" | egrep \" ${PROTO} [0-9]+\.[0-9]+\.[0-9]+\.[0-9]+:${PORT}[ -]\"`" ]; then
++			elif [ -n "`echo \"${LSOFLINE}\" | grep -E \" ${PROTO} [0-9]+\.[0-9]+\.[0-9]+\.[0-9]+:${PORT}[ -]\"`" ]; then
+ 				# Established or listening process using IPv4 address.
+ 				PID=`echo "${LSOFLINE}" | ${AWK_CMD} '{ print $2 }'`
+-			elif [ -n "`echo \"${LSOFLINE}\" | egrep \" ${PROTO} \[[:0-9a-fA-F]+\]:${PORT}[ -]\"`" ]; then
++			elif [ -n "`echo \"${LSOFLINE}\" | grep -E \" ${PROTO} \[[:0-9a-fA-F]+\]:${PORT}[ -]\"`" ]; then
+ 				# Established or listening process using IPv6 address.
+ 				PID=`echo "${LSOFLINE}" | ${AWK_CMD} '{ print $2 }'`
+ 			else
+@@ -15886,7 +15886,7 @@
+ 			if [ "${PROTO}" = "UDP" ]; then
+ 				FOUND=`${NETSTAT_CMD} -an | grep -i "^udp.*\.${PORT} " | ${AWK_CMD} '{ print $4 }' | grep "\.${PORT}$"`
+ 			elif [ "${PROTO}" = "TCP" ]; then
+-				FOUND=`${NETSTAT_CMD} -an | egrep -i "^tcp.*\.${PORT} .*(BOUND|ESTABLISH|LISTEN)" | ${AWK_CMD} '{ print $4 }' | grep "\.${PORT}$"`
++				FOUND=`${NETSTAT_CMD} -an | grep -E -i "^tcp.*\.${PORT} .*(BOUND|ESTABLISH|LISTEN)" | ${AWK_CMD} '{ print $4 }' | grep "\.${PORT}$"`
+ 			fi
+ 			;;
+ 		SunOS)
+@@ -15897,10 +15897,10 @@
+ 					FOUND=`${NETSTAT_CMD} -an | ${AWK_CMD} '/^UDP: IPv6/, /^$/ { print $1 }' | grep "\.${PORT}$"`
+ 				fi
+ 			elif [ "${PROTO}" = "TCP" ]; then
+-				FOUND=`${NETSTAT_CMD} -an | ${AWK_CMD} '/^TCP: IPv4/, /^$/ { print $0 }' | egrep 'BOUND|ESTABLISH|LISTEN' | ${AWK_CMD} '{ print $1 }' | grep "\.${PORT}$"`
++				FOUND=`${NETSTAT_CMD} -an | ${AWK_CMD} '/^TCP: IPv4/, /^$/ { print $0 }' | grep -E 'BOUND|ESTABLISH|LISTEN' | ${AWK_CMD} '{ print $1 }' | grep "\.${PORT}$"`
+ 
+ 				if [ -z "${FOUND}" ]; then
+-					FOUND=`${NETSTAT_CMD} -an | ${AWK_CMD} '/^TCP: IPv6/, /^$/ { print $0 }' | egrep 'BOUND|ESTABLISH|LISTEN' | ${AWK_CMD} '{ print $1 }' | grep "\.${PORT}$"`
++					FOUND=`${NETSTAT_CMD} -an | ${AWK_CMD} '/^TCP: IPv6/, /^$/ { print $0 }' | grep -E 'BOUND|ESTABLISH|LISTEN' | ${AWK_CMD} '{ print $1 }' | grep "\.${PORT}$"`
+ 				fi
+ 			fi
+ 			;;
+@@ -16435,7 +16435,7 @@
+ 	WHITEPROC=""
+ 	BLACKPROC=""
+ 
+-	LIBPCAPRES=`egrep -v '(^sk | 888e )' /proc/net/packet 2>/dev/null | head ${HEAD_OPT}1`
++	LIBPCAPRES=`grep -E -v '(^sk | 888e )' /proc/net/packet 2>/dev/null | head ${HEAD_OPT}1`
+ 
+ 	if [ -n "${LIBPCAPRES}" ]; then
+ 		ALLOWPROCLISTENERS=""
+@@ -16451,7 +16451,7 @@
+ 
+ 		INODE_LIST=""
+ 
+-		for INODE in `egrep -v '(^sk | 888e )' /proc/net/packet | ${AWK_CMD} '{ print $9 }'`; do
++		for INODE in `grep -E -v '(^sk | 888e )' /proc/net/packet | ${AWK_CMD} '{ print $9 }'`; do
+ 			INODE_LIST="${INODE_LIST}|$INODE"
+ 		done
+ 
+@@ -16459,7 +16459,7 @@
+ 		test -z "${INODE_LIST}" && INODE_LIST="RKHunterPktCapture"
+ 
+ 
+-		for PID in `${LSOF_CMD} -lMnPw -d 1-20 2>/dev/null | egrep "[ 	](pack[ 	]+(${INODE_LIST})|sock[ 	]+[^ 	]+[ 	]+[^ 	]+[ 	]+(${INODE_LIST}))[ 	]" | ${AWK_CMD} '{ print $2 }'`; do
++		for PID in `${LSOF_CMD} -lMnPw -d 1-20 2>/dev/null | grep -E "[ 	](pack[ 	]+(${INODE_LIST})|sock[ 	]+[^ 	]+[ 	]+[^ 	]+[ 	]+(${INODE_LIST}))[ 	]" | ${AWK_CMD} '{ print $2 }'`; do
+ 			NAME=""
+ 
+ 			if [ -h "/proc/$PID/exe" -a $HAVE_READLINK -eq 1 ]; then
+@@ -16677,7 +16677,7 @@
+ 			RKHTMPVAR=`grep "${STRING}" "${FNAME}"`
+ 
+ 			if [ -n "${RKHTMPVAR}" ]; then
+-				test -z "`echo \"${RKHTMPVAR}\" | egrep -v '^[ 	]*#'`" && continue
++				test -z "`echo \"${RKHTMPVAR}\" | grep -E -v '^[ 	]*#'`" && continue
+ 
+ 				if [ -n "`echo \"${RTKT_FILE_WHITELIST}\" | grep \"^${FNAMEGREP}:${STRING}$\"`" ]; then
+ 					if [ $VERBOSE_LOGGING -eq 1 ]; then
+@@ -16951,7 +16951,7 @@
+ 			if [ -n "${DSCL_CMD}" ]; then
+ 				display --to LOG --type INFO FOUND_CMD 'dscl' "${DSCL_CMD}"
+ 
+-				RKHTMPVAR2=`${DSCL_CMD} . search /Users uid 0 | egrep '^[^ 	)]' | cut -d'	' -f1`
++				RKHTMPVAR2=`${DSCL_CMD} . search /Users uid 0 | grep -E '^[^ 	)]' | cut -d'	' -f1`
+ 			else
+ 				display --to LOG --type INFO NOT_FOUND_CMD 'dscl'
+ 			fi
+@@ -17526,7 +17526,7 @@
+ 
+ 			test $SUNOS -eq 1 -o $IRIXOS -eq 1 && PS_ARGS="-ef"
+ 
+-			RKHTMPVAR=`${PS_CMD} ${PS_ARGS} | egrep '(syslogd|syslog-ng)( |$)' | grep -v 'egrep'`
++			RKHTMPVAR=`${PS_CMD} ${PS_ARGS} | grep -E '(syslogd|syslog-ng)( |$)' | grep -v 'grep'`
+ 
+ 			if [ -n "${RKHTMPVAR}" ]; then
+ 				SYSLOG_SEEN=1
+@@ -17546,7 +17546,7 @@
+ 				TITLE_SHOWN=1
+ 			fi
+ 
+-			RKHTMPVAR=`${PS_CMD} ${PS_ARGS} | egrep 'systemd-journald( |$)' | grep -v 'egrep'`
++			RKHTMPVAR=`${PS_CMD} ${PS_ARGS} | grep -E 'systemd-journald( |$)' | grep -v 'grep'`
+ 
+ 			if [ -n "${RKHTMPVAR}" ]; then
+ 				SYSTEMD_SEEN=1
+@@ -17562,7 +17562,7 @@
+ 				TITLE_SHOWN=1
+ 			fi
+ 
+-			RKHTMPVAR=`${PS_CMD} ${PS_ARGS} | egrep 'metalog( |$)' | grep -v 'egrep'`
++			RKHTMPVAR=`${PS_CMD} ${PS_ARGS} | grep -E 'metalog( |$)' | grep -v 'grep'`
+ 
+ 			if [ -n "${RKHTMPVAR}" ]; then
+ 				METALOG_SEEN=1
+@@ -17578,7 +17578,7 @@
+ 				TITLE_SHOWN=1
+ 			fi
+ 
+-			RKHTMPVAR=`${PS_CMD} ${PS_ARGS} | egrep 'socklog( |$)' | grep -v 'egrep'`
++			RKHTMPVAR=`${PS_CMD} ${PS_ARGS} | grep -E 'socklog( |$)' | grep -v 'grep'`
+ 
+ 			if [ -n "${RKHTMPVAR}" ]; then
+ 				SOCKLOG_SEEN=1
+@@ -17639,7 +17639,7 @@
+ 					RKHTMPVAR="an"
+ 				elif [ -n "`echo \"${FNAME}\" | grep '/syslog-ng\.conf$'`" ]; then
+ 					FTYPE="syslog-ng"
+-				elif [ -n "`echo \"${FNAME}\" | egrep '/(systemd-)?journald\.conf$'`" ]; then
++				elif [ -n "`echo \"${FNAME}\" | grep -E '/(systemd-)?journald\.conf$'`" ]; then
+ 					FTYPE="systemd"
+ 				else
+ 					FTYPE="syslog"
+@@ -17657,15 +17657,15 @@
+ 				if [ "${FTYPE}" != "systemd" ]; then
+ 					RKHTMPVAR=""
+ 
+-					if [ -n "`echo \"${FNAME}\" | egrep '/r?syslog\.conf$'`" ]; then
+-						RKHTMPVAR=`egrep -i '^[^#].*[ 	](@|:omrelp:).' "${FNAME}" | egrep -i -v '(@|:omrelp:)127\.'`
++					if [ -n "`echo \"${FNAME}\" | grep -E '/r?syslog\.conf$'`" ]; then
++						RKHTMPVAR=`grep -E -i '^[^#].*[ 	](@|:omrelp:).' "${FNAME}" | grep -E -i -v '(@|:omrelp:)127\.'`
+ 					else
+ 						#
+ 						# For syslog-ng we must look for a destination
+ 						# block which uses TCP or UDP.
+ 						#
+ 
+-						RKHTMPVAR=`${AWK_CMD} '/^[ 	]*destination( |	|$)/, /}/ { print $0 }' "${FNAME}" | egrep -i '( |	|\{|^)(tcp|udp)6?( |	|\(|$)' | egrep -v -i '(tcp|udp)6?[ 	]*\([ 	]*("[ 	]*)?127\.'`
++						RKHTMPVAR=`${AWK_CMD} '/^[ 	]*destination( |	|$)/, /}/ { print $0 }' "${FNAME}" | grep -E -i '( |	|\{|^)(tcp|udp)6?( |	|\(|$)' | grep -E -v -i '(tcp|udp)6?[ 	]*\([ 	]*("[ 	]*)?127\.'`
+ 					fi
+ 
+ 					if [ -n "${RKHTMPVAR}" ]; then
+@@ -17681,7 +17681,7 @@
+ 			# that the warnings are shown before anything else.
+ 			#
+ 
+-			if [ $SYSLOG_SEEN -eq 1 -a -z "`echo \"${FILEFOUND}\" | egrep ' (syslog|rsyslog|syslog-ng) '`" ]; then
++			if [ $SYSLOG_SEEN -eq 1 -a -z "`echo \"${FILEFOUND}\" | grep -E ' (syslog|rsyslog|syslog-ng) '`" ]; then
+ 				display --to SCREEN+LOG --type PLAIN --result WARNING --color RED --log-indent 2 --screen-indent 4 SYSTEM_CONFIGS_FILE
+ 				display --to LOG --type WARNING SYSTEM_CONFIGS_SYSLOG_NO_FILE 'syslog'
+ 			elif [ $SYSTEMD_SEEN -eq 1 -a -z "`echo \"${FILEFOUND}\" | grep ' systemd '`" ]; then
+@@ -17697,7 +17697,7 @@
+ 			# We only display the remote logging result if a configuration file was found.
+ 			#
+ 
+-			if [ -n "`echo \"${FILEFOUND}\" | egrep ' (syslog|rsyslog|syslog-ng) '`" ]; then
++			if [ -n "`echo \"${FILEFOUND}\" | grep -E ' (syslog|rsyslog|syslog-ng) '`" ]; then
+ 				if [ $ALLOW_SYSLOG_REMOTE_LOGGING -eq 1 ]; then
+ 					display --to SCREEN+LOG --type PLAIN --result ALLOWED --color GREEN --log-indent 2 --screen-indent 4 SYSTEM_CONFIGS_SYSLOG_REMOTE
+ 				elif [ $REM_LOGGING_FOUND -eq 0 ]; then
+@@ -17734,7 +17734,7 @@
+ 		FTYPE=`echo "${FTYPE}" | tail ${TAIL_OPT}1`
+ 	fi
+ 
+-	if [ -z "`echo \"${FTYPE}\" | egrep -v '(character special|block special|socket|fifo \(named pipe\)|symbolic link to|empty|directory|/MAKEDEV:)'`" ]; then
++	if [ -z "`echo \"${FTYPE}\" | grep -E -v '(character special|block special|socket|fifo \(named pipe\)|symbolic link to|empty|directory|/MAKEDEV:)'`" ]; then
+ 		return
+ 	fi
+ 
+@@ -17832,7 +17832,7 @@
+ 			RKHTMPVAR=`find_cmd mount`
+ 
+ 			if [ -n "${RKHTMPVAR}" ]; then
+-				test -n "`${RKHTMPVAR} 2>/dev/null | egrep '^fdesc(fs)? .*(type fdesc|\(fdescfs\))'`" && FDESCFS=1
++				test -n "`${RKHTMPVAR} 2>/dev/null | grep -E '^fdesc(fs)? .*(type fdesc|\(fdescfs\))'`" && FDESCFS=1
+ 			else
+ 				display --to LOG --type INFO NOT_FOUND_CMD 'mount'
+ 			fi
+@@ -17930,7 +17930,7 @@
+ 
+ 	for DIR in ${SHORTSEARCHDIRS}; do
+ 		if [ -d "${DIR}" ]; then
+-			RKHTMPVAR=`ls -1d ${DIR}/.* 2>/dev/null | egrep -v '/\.\.?$'`
++			RKHTMPVAR=`ls -1d ${DIR}/.* 2>/dev/null | grep -E -v '/\.\.?$'`
+ 			test -n "${RKHTMPVAR}" && LOOKINDIRS="${LOOKINDIRS}
+ ${RKHTMPVAR}"
+ 		fi
+@@ -17972,7 +17972,7 @@
+ 
+ 		FTYPE=`${FILE_CMD} "${FNAME}" 2>&1 | ${AWK_CMD} -F':' '{ print $NF }' | cut -c2-`
+ 
+-		test -n "`echo \"${FTYPE}\" | egrep 'character special|block special|empty'`" && continue
++		test -n "`echo \"${FTYPE}\" | grep -E 'character special|block special|empty'`" && continue
+ 
+ 		FNAMEGREP=`echo "${FNAME}" | sed -e 's/\([.$*?\\]\)/\\\\\1/g; s/\[/\\\\[/g; s/\]/\\\\]/g'`
+ 
+@@ -18313,7 +18313,7 @@
+ 				;;
+ 			named)
+ 				WHOLE_VERSION=`${APP_CMD_FOUND} -v 2>/dev/null`
+-				VERSION=`echo "${WHOLE_VERSION}" | egrep '^(named|BIND)[ 	][ 	]*[0-9]' | grep -v '/' | ${AWK_CMD} '{ print $2 }'`
++				VERSION=`echo "${WHOLE_VERSION}" | grep -E '^(named|BIND)[ 	][ 	]*[0-9]' | grep -v '/' | ${AWK_CMD} '{ print $2 }'`
+ 
+ 				if [ -n "`echo \"${VERSION}\" | grep '^[^-]*\.[0-9][0-9]*-P[^-]*-'`" ]; then
+ 					VERSION=`echo "${VERSION}" | cut -d'-' -f1-2`
+@@ -18377,7 +18377,7 @@
+ 			if [ -n "`echo \"${APP_WHITELIST}\" | grep -i \" ${APPLICATION}:${RKHTMPVAR} \"`" ]; then
+ 				APP_RESULTS="${APP_RESULTS}
+ ${APPLICATION}%${APPLICATION_DESC}%${VERSION}%-1"
+-			elif [ -n "`egrep -i \"^${APPLICATION}:.* ${RKHTMPVAR}( |$)\" \"${DB_PATH}/programs_bad.dat\" 2>&1`" ]; then
++			elif [ -n "`grep -E -i \"^${APPLICATION}:.* ${RKHTMPVAR}( |$)\" \"${DB_PATH}/programs_bad.dat\" 2>&1`" ]; then
+ 				APPS_FAILED_COUNT=`expr ${APPS_FAILED_COUNT} + 1`
+ 
+ 				APP_RESULTS="${APP_RESULTS}
+@@ -19462,7 +19462,7 @@
+ 	#
+ 
+ 	echo $ECHOOPT ""
+-	echo $ECHOOPT "Usage: rkhunter {--check | --unlock |"
++	echo $ECHOOPT "Usage: rkhunter {--check | --unlock | --update | --versioncheck |"
+ 	echo $ECHOOPT "                 --propupd [{filename | directory | package name},...] |"
+ 	echo $ECHOOPT "                 --list [{tests | {lang | languages} | rootkits | perl | propfiles}] |"
+ 	echo $ECHOOPT "                 --config-check | --version | --help} [options]"
+@@ -19791,8 +19791,8 @@
+ # required commands are tested early on using just the root PATH. Then
+ # BINDIR is checked, and finally the rest of the commands are then
+ # checked using the new PATH from BINDIR.
+-ABSOLUTELY_REQUIRED_CMDS="cut egrep grep sed tail tr"
+-REQCMDS="awk cat chmod chown cp cut date egrep grep head ls mv sed sort tail touch tr uname uniq wc"
++ABSOLUTELY_REQUIRED_CMDS="cut grep sed tail tr"
++REQCMDS="awk cat chmod chown cp cut date grep head ls mv sed sort tail touch tr uname uniq wc"
+ 
+ # This will be set to a list of commands that have been disabled.
+ DISABLED_CMDS=""
+@@ -20896,10 +20896,10 @@
+ 	#
+ 
+ 	if [ -z "${PRELINK_HASH}" ]; then
+-		if [ -z "`echo \"${HASH_FUNC}\" | egrep '(/filehashsha\.pl Digest::MD5|/filehashsha\.pl .* 1$|shasum -a 1$)'`" ]; then
++		if [ -z "`echo \"${HASH_FUNC}\" | grep -E '(/filehashsha\.pl Digest::MD5|/filehashsha\.pl .* 1$|shasum -a 1$)'`" ]; then
+ 			RKHTMPVAR=`echo "${HASH_FUNC}" | cut -d' ' -f1`
+ 
+-			if [ -z "`echo ${RKHTMPVAR} | egrep -i 'sha1|md5'`" ]; then
++			if [ -z "`echo ${RKHTMPVAR} | grep -E -i 'sha1|md5'`" ]; then
+ 				if [ $HASH_OPT -eq 1 ]; then
+ 					echo "This system uses prelinking, but the '--hash' option (${HASH_FUNC}) does not look like SHA1 or MD5."
+ 				else
+@@ -21007,7 +21007,7 @@
+ #
+ IFS=$IFSNL
+ 
+-for LINE in `egrep '^MSG_(TYPE|RESULT)_' "${DB_PATH}/i18n/en" 2>/dev/null`; do
++for LINE in `grep -E '^MSG_(TYPE|RESULT)_' "${DB_PATH}/i18n/en" 2>/dev/null`; do
+ 	TYPE=`echo "${LINE}" | cut -d: -f1`
+ 
+ 	if [ "${LANGUAGE}" != "en" ]; then
+@@ -21212,7 +21212,7 @@
+ 			fi
+ 		elif [ -n "${PRELINK_HASH}" ]; then
+ 			display --to LOG --type INFO HASH_FUNC_PRELINK "${PRELINK_HASH}"
+-		elif [ -z "`echo \"${HASH_FUNC}\" | egrep -i 'sha1|md5'`" ]; then
++		elif [ -z "`echo \"${HASH_FUNC}\" | grep -E -i 'sha1|md5'`" ]; then
+ 			SKIP_HASH_MSG=1
+ 		else
+ 			display --to LOG --type INFO HASH_FUNC "${HASH_FUNC}"
+
diff --git a/app-forensics/rkhunter/rkhunter-1.4.6-r2.ebuild b/app-forensics/rkhunter/rkhunter-1.4.6-r2.ebuild
new file mode 100644
index 000000000000..84bbbe851de2
--- /dev/null
+++ b/app-forensics/rkhunter/rkhunter-1.4.6-r2.ebuild
@@ -0,0 +1,64 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit bash-completion-r1
+
+DESCRIPTION="Rootkit Hunter scans for known and unknown rootkits, backdoors, and sniffers"
+HOMEPAGE="http://rkhunter.sf.net/"
+SRC_URI="mirror://sourceforge/${PN}/${P}.tar.gz"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~mips ~ppc ~x86"
+IUSE=""
+
+RDEPEND="
+	app-shells/bash
+	dev-lang/perl
+	sys-process/lsof[rpc]
+"
+
+S="${WORKDIR}/${P}/files"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-1.4.6-conf.patch"
+	"${FILESDIR}/${PN}-1.4.6-no-insecure-web.patch"
+	"${FILESDIR}/${PN}-1.4.6-grep-3.8.patch"
+)
+
+src_install() {
+	# rkhunter requires to be root
+	dosbin ${PN}
+
+	insinto /etc
+	doins ${PN}.conf
+
+	exeinto /usr/lib/${PN}/scripts
+	doexe *.pl
+
+	insinto /var/lib/${PN}/db
+	doins *.dat
+
+	insinto /var/lib/${PN}/db/i18n
+	doins i18n/*
+
+	doman ${PN}.8
+	dodoc ACKNOWLEDGMENTS CHANGELOG FAQ README
+
+	exeinto /etc/cron.daily
+	newexe "${FILESDIR}/${PN}-1.4.cron" ${PN}
+
+	newbashcomp "${FILESDIR}/${PN}.bash-completion" ${PN}
+}
+
+pkg_postinst() {
+	elog "A cron script has been installed to /etc/cron.daily/rkhunter."
+	elog "To enable it, edit /etc/cron.daily/rkhunter and follow the"
+	elog "directions."
+	elog "If you want ${PN} to send mail, you will need to install"
+	elog "virtual/mailx or alter the EMAIL_CMD variable in the"
+	elog "cron script and possibly the MAIL_CMD variable in the"
+	elog "${PN}.conf file to use another mail client."
+}