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Full Discussion: different line and column ?
Top Forums Shell Programming and Scripting different line and column ? Post 302164910 by tahsinaltay on Wednesday 6th of February 2008 07:41:15 AM
Old 02-06-2008
No it isn't my homework. I am trying to take free ram in centOS.

total used free shared buffers cached
Mem: 248 227 20 0 34 100
-/+ buffers/cache: 93 155
Swap: 2000 105 1895

I want to take 3rd and 7th column in 2nd line. I am taking but for earch line not 2nd Smilie...

free -m | awk '{print $3 - $7}' | awk '{print "Free Ram: " $1}'
 

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PR(1)							      General Commands Manual							     PR(1)

NAME
pr - print file SYNOPSIS
pr [ option ... ] [ file ... ] DESCRIPTION
Pr produces a printed listing of one or more files on its standard output. The output is separated into pages headed by a date, the name of the file or a specified header, and the page number. With no file arguments, pr prints its standard input. Options apply to all following files but may be reset between files: -n Produce n-column output. +n Begin printing with page n. -b Balance columns on last page, in case of multi-column output. -d Double space. -en Set the tab stops for input text every n spaces. -h Take the next argument as a page header (file by default). -in Replace sequences of blanks in the output by tabs, using tab stops set every n spaces. -f Use formfeeds to separate pages. -ln Take the length of the page to be n lines instead of the default 66. -m Print all files simultaneously, each in one column. -n Number the lines of each file. -on Offset the left margin n character positions. -sc Separate columns by the single character c instead of aligning them with white space. A missing c is taken to be a tab. -t Do not print the 5-line header or the 5-line trailer normally supplied for each page. -wn For multi-column output, take the width of the page to be n characters instead of the default 72. SOURCE
/sys/src/cmd/pr.c SEE ALSO
cat(1), lp(1) PR(1)
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