Extracting information and creating numeric values using awk Post: 302438446

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I want to write a script that extracts a value from a line of text. I know it can be done using awk but I've never used awk before so I don't know how to do it. The text is: Mem: 100M Active, 2150K Cache, 500M Buf, 10G Free I want to extract the free memory value to use as a variable. In...

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Replace a numeric values in a certain column

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shtool-path

SHTOOL-PATH.TMP(1)					      GNU Portable Shell Tool						SHTOOL-PATH.TMP(1)

NAME

       shtool-path - GNU shtool command dealing with shell path variables

SYNOPSIS

       shtool path [-s|--suppress] [-r|--reverse] [-d|--dirname] [-b|--basename] [-m|--magic] [-p|--path path] str [str ...]

DESCRIPTION

       This command deals with shell $PATH variables. It can find a program through one or more filenames given by one or more str arguments.  It
       prints the absolute filesystem path to the program displayed on "stdout" plus an exit code of 0 if it was really found.

OPTIONS

       The following command line options are available.

       -s, --suppress
	   Supress output. Useful to only test whether a program exists with the help of the return code.

       -r, --reverse
	   Transform a forward path to a subdirectory into a reverse path.

       -d, --dirname
	   Output the directory name of str.

       -b, --basename
	   Output the base name of str.

       -m, --magic
	   Enable advanced magic search for ""perl"" and ""cpp"".

       -p, --path path
	   Search in path. Default is to search in $PATH.

EXAMPLE

	#   shell script
	awk=`shtool path -p "${PATH}:." gawk nawk awk`
	perl=`shtool path -m perl`
	cpp=`shtool path -m cpp`
	revpath=`shtool path -r path/to/subdir`

HISTORY

       The GNU shtool path command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 1998 for Apache. It was later taken
       over into GNU shtool.

SEE ALSO

       shtool(1), which(1).

18-Jul-2008							   shtool 2.0.8 						SHTOOL-PATH.TMP(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Replace spaces with 0's having numeric values.

Discussion started by: videsh77

2. Programming

numeric values ending in 'U'

Discussion started by: sneakyimp

3. Shell Programming and Scripting

Extracting numeric from string

Discussion started by: vjasai

4. Shell Programming and Scripting

How to check if the file contains only numeric values

Discussion started by: sunilmenhdiratt