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Full Discussion: Command line...
Top Forums Shell Programming and Scripting Command line... Post 53280 by google on Sunday 11th of July 2004 09:21:06 AM
Old 07-11-2004
Take it command by command: - Looks like you have two seperate command sequences here. The first being the ps -gu | head -n 1 and the second starting from the ps -gau ...

Code:
first set
ps -gu -- gives a display of all processes by group name in a user readble format
head -n 1 --prints the the first line of output piped to it from the first command.
The output of this command is probably (I didnt
run it) just the headings of the ps command.

second set
ps -gau - selection of all processes, in a readable format
egrep -v "CPU|kproc"|grep "${user}"|grep
-v grep|- a search string, basically it ignores and does not output
any lines that have "CPU" or "kproc" in them and outputs all lines
with the value of ${user}. It also ignores any grep string.

sort +2b -3 -n -r|head -n 10 - numeric sort of teh 2nd and third
fields, ignoring blank space and in reverse order.
uptime - prints a display of how long the system has been running

It appears this is just a command set to get all processes for a given user, in a sorted format.
Last edited by google; 07-11-2004 at 12:14 PM..
 

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LEARN ABOUT SUSE

lzgrep

XZGREP(1)							     XZ Utils								 XZGREP(1)

NAME

       xzgrep - search compressed files for a regular expression

SYNOPSIS

       xzgrep [grep_options] [-e] pattern file...
       xzegrep ...
       xzfgrep ...
       lzgrep ...
       lzegrep ...
       lzfgrep ...

DESCRIPTION

       xzgrep  invokes	grep(1)  on  files  which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1).  All options
       specified are passed directly to grep(1).

       If no file is specified, then the standard input is decompressed if necessary and fed  to  grep(1).   When  reading  from  standard  input,
       gzip(1) and bzip2(1) compressed files are not supported.

       If  xzgrep  is  invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1).  The same applies to names lzgrep, lze-
       grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.

ENVIRONMENT

       GREP   If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1).

SEE ALSO

       grep(1), xz(1), gzip(1), bzip2(1), zgrep(1)

Tukaani 							    2009-07-05								 XZGREP(1)
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