linux-kernel - [PATCH 22/22] ver_linux: proc/modules, limit text processing to 'sed'

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Date:	Mon, 12 Oct 2015 21:40:02 +0300
From:	Alexander Kapshuk <alexander.kapshuk@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	gregkh@...uxfoundation.org, jim.epost@...il.com, richard@....at,
	tytso@....edu, Alexander Kapshuk <alexander.kapshuk@...il.com>
Subject: [PATCH 22/22] ver_linux: proc/modules, limit text processing to 'sed'

This patch is more of a personal preference, rather than a fix for a problem.

The current implementation used a combination of both 'cat' and 'sed'
to generate an unsorted list of kernel modules separated by while space.

The proposed implementation uses 'sort' and 'sed' to generate a sort
list of kernel modules separated by while space.

Tested on:
Gentoo Linux
Debian 6.0.10
Oracle Linux Server release 7.1
Arch Linux
openSuSE 13.2

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@...il.com>
---
 scripts/ver_linux | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/scripts/ver_linux b/scripts/ver_linux
index ae426c2..024a11a 100755
--- a/scripts/ver_linux
+++ b/scripts/ver_linux
@@ -178,7 +178,16 @@ awk '/version/{
 	substr($0,RSTART,RLENGTH))
 }'
 
-if [ -e /proc/modules ]; then
-    X=`cat /proc/modules | sed -e "s/ .*$//"`
-    echo "Modules Loaded         "$X
-fi
+test -e /proc/modules &&
+sort /proc/modules |
+sed '
+	s/ .*//
+	H
+${
+	g
+	s/^\n/Modules Loaded\t\t/
+	y/\n/ /
+	q
+}
+	d
+'
-- 
2.4.9

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