how to search two patterns using grep???

[AQWQ]

i wanna search two patterns simultaneosly using grep.I have tried using grep -f <filename which has patterns entry>.But i don need this..i wanna avoid this look up in to the fileis there any way??
Also i need to know whether there is any function to compare two strings in unix???i tried ueing if test <string1> -eq <string2> but its not working...


Thanx in advance Santhosh Ravindran

 

[fcail]

Hi,

to search two patterns use :

grep -E &quot;pattern1|pattern2&quot; file, the pipe is like an &quot;OR condition&quot;.

To test string use &quot; &quot; :
&quot;$STRING&quot; -eq &quot;$STRING2&quot;

You should go in the man of KSH to get more information, all tests are explained.

Regards.

Fcail

 

[AQWQ]

Hi fcail ur suggestion for grep worked out.but test failed.i referred man section and found out that we can use = symbol to compare two strings.

ie., test $string1 = $string2 returns true if string are same.

Thanx Santhosh Ravindran

 

[MikeLacey]

Santosh,

Depends upon which shell you are using, fcail's suggestion looks ok for sh and ksh scripts. Mike
michael.j.lacey@ntlworld.com
Email welcome if you're in a hurry or something -- but post in tek-tips as well please, and I will post my reply here as well.