Help with xargs Post: 302781227

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Top Forums Shell Programming and Scripting Help with xargs Post 302781227 by axiopisty on Friday 15th of March 2013 05:57:20 PM

03-15-2013

Registered User

Quote:

Apparently catalina has its port as string 2 here, but most things won't.

I don't think this is specific to catalina. In my example, catalina was just an example of a program I was searching for. the output is actually coming from ps -aux. So, it looks like it would always be column 2 unless ps was configured to reorder the columns.

Quote:

Also, whenever you're doing grep | grep | awk | kitchen | sink, you should just replace it all with one simple awk command.

I'm also a newbie with awk. In my original post I mentioned that I would also like to have "catalina" be a parameter that I could pass into the script. If I wanted to do this search for some other application, say httpd for example, would there be an easy way to pass that in as a parameter to the script? I was thinking that using the form of

Code:

grep $1 |grep -v grep

would make it easier to replace the parameter, "catalina" in this example, with a parameter passed into the script rather than having to make the script wrap [] around the first character of $1.

What would the appropriate awk command be to search for the passed in parameter "$1" instead of searching for "/[c]atalina/" if I don't use the grep | grep -v form?

Also, is there a way to do this with xargs?

axiopisty

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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)

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