UNIX for Dummies Questions & Answers

I can not find error why my script does not work .

Code:

egrep -n "is" $egrepline

where

Code:

egrepline = "filename1 ...filenameN"

supposed result:

Code:

filename1:linenumber: matched line.
.
filenameN:linenumber: matched line

If more than 2 files as

Code:

egrepline = "filename1 filename2"

, I get correct format

If only one file as

Code:

egrepline = "filename1"

,

my result is wrong format as:

Code:

filename1
:linenumber: matched line.

I try
1. egrep -n "is" $egrepline
2. egrep -n "is" "$egrepline"
3. egrep -n "is" {$egrepline}

I can not get correct format

Is there any missing word in my command? Please help.

Thank you

The easiest solution in my opinion is to add dummy file at the end:

Code:

egrepline="filename1"
egrepline="$egrepline /dev/null"
egrep -n "is" $egrepline

Thank you . Its work!