linux-kernel - [PATCH net-next] samples: pktgen: Use "grep -E" instead of "egrep"

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Message-Id: <1668826504-32162-1-git-send-email-yangtiezhu@loongson.cn>
Date:   Sat, 19 Nov 2022 10:55:04 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next] samples: pktgen: Use "grep -E" instead of "egrep"

The latest version of grep claims the egrep is now obsolete so the build
now contains warnings that look like:
	egrep: warning: egrep is obsolescent; using grep -E
fix this up by moving the related file to use "grep -E" instead.

  sed -i "s/egrep/grep -E/g" `grep egrep -rwl samples/pktgen`

Here are the steps to install the latest grep:

  wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz
  tar xf grep-3.8.tar.gz
  cd grep-3.8 && ./configure && make
  sudo make install
  export PATH=/usr/local/bin:$PATH

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 samples/pktgen/functions.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/pktgen/functions.sh b/samples/pktgen/functions.sh
index 9331942..dd4e53a 100644
--- a/samples/pktgen/functions.sh
+++ b/samples/pktgen/functions.sh
@@ -191,7 +191,7 @@ function extend_addr6()
     fi
 
     # if shrink '::' occurs multiple, it's malformed.
-    shrink=( $(egrep -o "$sep{2,}" <<< $addr) )
+    shrink=( $(grep -E -o "$sep{2,}" <<< $addr) )
     if [[ ${#shrink[@]} -ne 0 ]]; then
         if [[ ${#shrink[@]} -gt 1 || ( ${shrink[0]} != $sep2 ) ]]; then
             err 5 "Invalid IP6 address: $1"
-- 
2.1.0