I Need help deleting lines from file where column1=xxx

[mjuell]

I want do delete the lines from a file where column 1 matches an exact pattern.

( I want to delete the lines where column 1=123, not the lines where its 21234 )

Please Help!....

 

[Ygor]

Try...

awk '$1 != "123"' file1 > file2

 

[PHV]

Try this:

grep -v '^123' input >output

Hope This Help
PH.

 

[mjuell]

Thanx...

it worked with grep -v '^123+RS' input >output