linux-kernel - [PATCH 18/22] ver_linux: loadkeys, look for numerical input, not field number

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Message-Id: <1444675202-1375-18-git-send-email-alexander.kapshuk@gmail.com>
Date:	Mon, 12 Oct 2015 21:39:58 +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 18/22] ver_linux: loadkeys, look for numerical input, not field number

'loadkeys -h' no longer prints the version number across all distros,
despite the claim to do so in the manpage, which I found to be the case
on a Debian Linux system.

The proposed implementation utilises the output of 'loadkeys -V' to
acquire the version of both 'Kbd' and 'Console-tools'.

Tested on:
Gentoo Linux
Debian 6.0.10
Oracle Linux Server release 7.1

Rely on regex to find the version number, rather than rely on numerical input to be found in a particular input field.

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@...il.com>
---
 scripts/ver_linux | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/scripts/ver_linux b/scripts/ver_linux
index 4ef1b7d..e6b57d5 100755
--- a/scripts/ver_linux
+++ b/scripts/ver_linux
@@ -147,13 +147,12 @@ awk '/tools/{
 	substr($0,RSTART,RLENGTH))
 }'
 
-# Kbd needs 'loadkeys -h',
-loadkeys -h 2>&1 | awk \
-'(NR==1 && ($3 !~ /option/)) {print "Kbd                   ", $3}'
-
-# while console-tools needs 'loadkeys -V'.
-loadkeys -V 2>&1 | awk \
-'(NR==1 && ($2 ~ /console-tools/)) {print "Console-tools         ", $3}'
+loadkeys -V 2>&1 |
+awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
+	match($0, /[0-9]+([.]?[0-9]+)+/)
+	$0 = substr($0,RSTART,RLENGTH)
+	printf("Kbd\t\t\t%s\nConsole-tools\t\t%s\n",$0,$0)
+}'
 
 oprofiled --version 2>&1 | awk \
 '(NR==1 && ($2 == "oprofile")) {print "oprofile              ", $3}'
-- 
2.4.9

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