all: replace egrep with grep -E

The egrep command has been deprecated in GNU Grep since 2007, and nowadays
using egrep rather than grep -E will print a warning to the user, which is
very annoying.

Replace all usages of egrep with grep -E.

Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>

4 files changed, 7 insertions, 7 deletions

diff --git a/tools/check-copyright.sh b/tools/check-copyright.sh
index fe88c5eaf..ba28df438 100755
--- a/tools/check-copyright.sh
+++ b/tools/check-copyright.sh
@@ -6,12 +6,12 @@ FILES=0
 FAILED=""
 for F in $(find . -name "*.go" -o -name "*.sh" -o -name "*.cpp" -o -name "*.cc" -o -name "*.h" \
 	-o -name "*.S" -o -name "*.py" -o -name "*.yml" -o -name "*.yaml" -o -name "*.fbs" \
-	-o \( -path "./sys/*/*.txt" \) | egrep -v "/_include/|/gen/|/testdata/"); do
+	-o \( -path "./sys/*/*.txt" \) | grep -E -v "/_include/|/gen/|/testdata/"); do
 	((FILES+=1))
-	cat $F | tr '\n' '_' | egrep "(//|#) Copyright 20[0-9]{2}(/20[0-9]{2})? syzkaller project authors\. All rights reserved\._(//|#) Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file\." >/dev/null
+	cat $F | tr '\n' '_' | grep -E "(//|#) Copyright 20[0-9]{2}(/20[0-9]{2})? syzkaller project authors\. All rights reserved\._(//|#) Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file\." >/dev/null
 	if [ $? -eq 0 ]; then continue; fi
 	# Ignore auto-generated files.
-	egrep "^(//|#) Code generated .* DO NOT EDIT\\.|(WARNING: This file is machine generated)|automatically generated by the FlatBuffers compiler" $F >/dev/null
+	grep -E "^(//|#) Code generated .* DO NOT EDIT\\.|(WARNING: This file is machine generated)|automatically generated by the FlatBuffers compiler" $F >/dev/null
 	if [ $? -eq 0 ]; then continue; fi
 	# Ignore untracked files.
 	git ls-files --error-unmatch $F >/dev/null 2>&1
diff --git a/tools/check-language.sh b/tools/check-language.sh
index b9c5d1d95..f3108ffa9 100755
--- a/tools/check-language.sh
+++ b/tools/check-language.sh
@@ -7,7 +7,7 @@ FAILED=""
 shopt -s nocasematch
 for F in $(find . -name "*.go" -o -name "*.sh" -o -name "*.cc" -o -name "*.md" \
 	-o -name "*.S" -o -name "*.py" -o -name "*.yml" -o -name "*.yaml" | \
-	egrep -v "/gen/|executor/syscalls.h|dashboard/config/linux/bits|pkg/csource/generated.go|tools/check-language.sh"); do
+	grep -E -v "/gen/|executor/syscalls.h|dashboard/config/linux/bits|pkg/csource/generated.go|tools/check-language.sh"); do
 	((FILES+=1))
 	L=0
 	while IFS= read -r LINE; do
diff --git a/tools/check-shebang.sh b/tools/check-shebang.sh
index 368e03b64..9c211eb7b 100755
--- a/tools/check-shebang.sh
+++ b/tools/check-shebang.sh
@@ -4,9 +4,9 @@
 
 FAILED=""
 FILES=0
-for F in $(find . -perm -u=x -type f | egrep -v "/gen/|/.git"); do
+for F in $(find . -perm -u=x -type f | grep -E -v "/gen/|/.git"); do
 	((FILES+=1))
-	if head -n 1 "$F" | egrep -q '^#!/' && head -n 1 "$F" | egrep -v -q -e '^#!/bin/sh$' -e '^#!/usr/bin/env '; then
+	if head -n 1 "$F" | grep -E -q '^#!/' && head -n 1 "$F" | grep -E -v -q -e '^#!/bin/sh$' -e '^#!/usr/bin/env '; then
 		echo "$F: Non-portable shebang line. Please use /usr/bin/env to locate the interpreter."
 		FAILED=1
 	fi
diff --git a/tools/check-whitespace.sh b/tools/check-whitespace.sh
index 9fdbdf07d..63031bee8 100755
--- a/tools/check-whitespace.sh
+++ b/tools/check-whitespace.sh
@@ -7,7 +7,7 @@ FAILED=""
 RE="[[:space:]]$"
 LAST_EMPTY=""
 for F in $(find . -name "*.sh" -o -name "*.S" -o -name "*.py" -o -name "*.yml" -o -name "*.yaml" -o -name "*.md" | \
-		egrep -v "/gen/"); do
+		grep -E -v "/gen/"); do
 	((FILES+=1))
 	L=0
 	while IFS= read -r LINE; do