grep command usage

[pmcmicha]

I am using the korn shell in my unix system. I am attempting to grep more than 1 file at a time that have different names.&nbsp;&nbsp;I already tried to man grep, but it didn't produce any results that I could see would help.&nbsp;&nbsp;Here is an example of what I am trying to do...<br><br>Ex.&nbsp;&nbsp;cat file.log¦grep i9874 <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cat file.log¦grep i9923<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cat file.log¦grep un3249<br><br>How can I make this one long command or can I?&nbsp;&nbsp;Thanks

 

[chgwhat]

Try <br>grep i9874 file.log;grep i9923 file.log;grep un3249 file.log<br><br>I would use awk for this <br>awk '/i9874¦i9923¦un3249/' file.log<br><br>

 

[pmcmicha]

Thanks alot for the commands.&nbsp;&nbsp;The first one worked out great, but the second one wasn't as successful.&nbsp;&nbsp;Thanks again.

 

[greyd]

my way:<br>put pattern to the file (&quot;zzz&quot; for example)<br>and use command like grep -f zzz file.log

 

[ElgisRamon]

You need an <b>OR</b> or an <b>AND</b> operation?<br><br>The <b>OR<b> operation is:<br><br><FONT FACE=monospace><br><b>egrep</b> &quot;text1<b>¦</b>text2<b>¦</b>text3&quot; files<br></font><br>That will show you the lines with text1 OR with text2 OR with text3. If you don't have access to egrep try using <b>grep -E</b> &quot;text1¦text2¦text3&quot; files<br><br>The and operation is<br><br><FONT FACE=monospace><br>grep &quot;text1&quot; files ¦ grep &quot;text2&quot; ¦ grep &quot;text3&quot;<br></font><br>That will show you the lines with text1 AND with with text3.<br><br>I hope it works...