Problem in Using fgrep Command with pattern file option

Shell Programming and Scripting
1

Hi,

i am using fgrep command with following syntax

fgrep -v -f pattern_file_name file

file contains few line and have the pattern which i am giving in pattern file.

My Problem is :
its is not giving any output.

while i am using fgrep -f pattern_file_name file

it is showing all lines of file.

this was the case of Cshell, if i run these command in tclsh

then (fgrep -v -f pattern_file_name file) command giving exception like -child process exited abnormally.

please provide me a solution of this problem.

Thanks

2

I believe the only cause is wrong patterns in your "pattern_file_name". But I could be wrong of course.

3

I tried in CSH and the same worked for me OK.

 
cat rem
aa bb
gg
dd ff

cat rem1
ss ddd aa bb ff gg
dd ff ff ff fff
dsds
dsd
agdsgs

 
TESTBOX> fgrep -f rem rem1
ss ddd aa bb ff gg
dd ff ff ff fff
TESTBOX> fgrep -v -f rem rem1
dsds
dsd
agdsgs

post the sample i/p and o/p from your system.

4

Thanks Panyam

I used same file which you have shown in ur thread but still ...

cat file ----
ss ddd aa bb ff gg
dd ff ff ff fff
dsds
dsd
agdsgs

cat filter1
aa bb
gg
dd ff

Output for the command ---fgrep -f filter1 file
it is giving complete file
ss ddd aa bb ff gg
dd ff ff ff fff
dsds
dsd
agdsgs

output for the command ---fgrep -v -f filter1 file

it is not printing anything

so what may be the problem with me ?

Thanks

5

Looks odd!!..

Is it a simple "grep" working?

try with grep -f option and see.