Check Running Processes Post: 302998369

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Top Forums Shell Programming and Scripting Check Running Processes Post 302998369 by rbatte1 on Wednesday 31st of May 2017 04:59:15 AM

05-31-2017

Moderator

With the -E flag that you are already using, the search is for a regular expression. You can include an expression so that grep will not find itself like this:-

Code:

ps -ef | grep -E "Hell[o]"

The [o] matches the single character o which seems illogical until you recognise that the grep process will therefore not match, so it excludes itself.

You have several options separated with pipes so you pick the row if you match any of the items so you will need to do this to each part.

Two more thoughts:-

You have a search pattern of a space. Is that really what you want? I would expect much more output if that were true.
Your sort -u seems in the wrong place. Perhaps this might be better:-
Code:
```
ps -eo comm= | grep -Eo "whateve[r]|somethin[g]|els[e]" | sort | uniq -c
```
I use -o comm= to strip out the headings.

You do end up with the output the other way round. Is that a problem?

I hope that this helps,
Robin

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LEARN ABOUT ULTRIX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)