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Top Forums Shell Programming and Scripting Merge multiple lines into a single line Post 303000119 by MadeInGermany on Tuesday 4th of July 2017 02:15:07 PM
Old 07-04-2017
With sed (multi-liner with comments)
Code:
sed '
#loop
:L
# last line? Then jump to E (leave the loop)
$bE
# append next line to the line buffer with \n in between
N
# empty line? Not then jump to L
/\n *$/!bL
:E
# replace all empbedded \n and the surrounding space with one space
s/ *\n */ /g
# delete leading space
s/^ *//
# delete a trailing ; and following space
s/; *$//
# default print of line buffer
' logfile

Compare this practical exercise with the man sed! You might learn something.

Last edited by MadeInGermany; 07-04-2017 at 03:25 PM..
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SA2(8)								Linux User's Manual							    SA2(8)

NAME
sa2 - Write a daily report in the /var/log/sa directory. SYNOPSIS
/usr/lib64/sa/sa2 DESCRIPTION
The sa2 command is a shell procedure variant of the sar command which writes a daily report in the /var/log/sa/sardd file, where the dd parameter indicates the current day. The sa2 command handles all of the flags and parameters of the sar command. The sa2 command is designed to be started automatically by the cron command. EXAMPLES
To run the sa2 command daily, place the following entry in your root or adm crontab file: 5 19 * * 1-5 /usr/lib64/sa/sa2 -A & This will generate a daily report called /var/log/sa/sardd It will also remove reports more than one week old. FILES
/var/log/sa/sardd Indicate the daily report file, where the dd parameter is a number representing the day of the month. AUTHOR
Sebastien Godard (sysstat <at> orange.fr) SEE ALSO
sar(1), sadc(8), sa1(8), sadf(1) http://pagesperso-orange.fr/sebastien.godard/ Linux AUGUST 2010 SA2(8)
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