Use POSIX `grep`

* GNU grep 3.8 considers `egrep` and `fgrep` obsolescent and throws warnings:

    ./mkcapshdoc.sh > capshdoc.c.cf
    fgrep: warning: fgrep is obsolescent; using /bin/grep -F
    fgrep: warning: fgrep is obsolescent; using /bin/grep -F
    fgrep: warning: fgrep is obsolescent; using /bin/grep -F
    fgrep: warning: fgrep is obsolescent; using /bin/grep -F
    [...]

  https://lists.gnu.org/archive/html/info-gnu/2022-09/msg00001.html

Signed-off-by: Andrew G. Morgan <morgan@kernel.org>

4 files changed, 4 insertions, 4 deletions

diff --git a/Make.Rules b/Make.Rules
index d2768e1..26d433a 100644
--- a/Make.Rules
+++ b/Make.Rules
@@ -18,7 +18,7 @@ FAKEROOT=$(DESTDIR)
 # administrative operations that could be needed to recover a system.
 
 ifndef lib
-lib=$(shell ldd /usr/bin/ld|egrep "ld-linux|ld.so"|cut -d/ -f2)
+lib=$(shell ldd /usr/bin/ld|grep -E "ld-linux|ld.so"|cut -d/ -f2)
 endif
 
 ifndef sbin
diff --git a/kdebug/test-kernel.sh b/kdebug/test-kernel.sh
index 0962ce5..5d480c9 100755
--- a/kdebug/test-kernel.sh
+++ b/kdebug/test-kernel.sh
@@ -62,7 +62,7 @@ if [ -f "$HERE/interactive" ]; then
     echo "file /root/interactive $HERE/interactive 0755 0 0" >> fs.conf
 fi
 
-COMMANDS="awk cat chmod cp dmesg fgrep id less ln ls mkdir mount pwd rm rmdir sh sort umount uniq vi"
+COMMANDS="awk cat chmod cp dmesg grep id less ln ls mkdir mount pwd rm rmdir sh sort umount uniq vi"
 for f in $COMMANDS; do
     echo slink /bin/$f /sbin/busybox 0755 0 0 >> fs.conf
 done
diff --git a/progs/mkcapshdoc.sh b/progs/mkcapshdoc.sh
index 8421685..d2ee4bd 100755
--- a/progs/mkcapshdoc.sh
+++ b/progs/mkcapshdoc.sh
@@ -15,7 +15,7 @@ EOF
 
 let x=0
 while [ -f "../doc/values/${x}.txt" ]; do
-    name=$(fgrep ",${x}}" ../libcap/cap_names.list.h|sed -e 's/{"//' -e 's/",/ = /' -e 's/},//')
+    name=$(grep -F ",${x}}" ../libcap/cap_names.list.h|sed -e 's/{"//' -e 's/",/ = /' -e 's/},//')
     echo "static const char *explanation${x}[] = {  /* ${name} */"
     sed -e 's/"/\\"/g' -e 's/^/    "/' -e 's/$/",/' "../doc/values/${x}.txt"
     let x=1+${x}
diff --git a/progs/quicktest.sh b/progs/quicktest.sh
index 776b175..7366a6c 100755
--- a/progs/quicktest.sh
+++ b/progs/quicktest.sh
@@ -256,7 +256,7 @@ rm -f nsprivileged
 cp ./tcapsh-static ./nsprivileged && /bin/chmod -s ./nsprivileged
 ./setcap -n 1 all=ep ./nsprivileged
 if [ $? -eq 0 ]; then
-    ./getcap -n ./nsprivileged | fgrep "[rootid=1]"
+    ./getcap -n ./nsprivileged | grep -F "[rootid=1]"
     if [ $? -ne 0 ]; then
 	echo "FAILED setting ns rootid on file"
 	exit 1