UNIX for Dummies Questions & Answers

You can try this:

Code:

/usr/xpg4/bin/sed 's/^/^/' file2 | /usr/xpg4/bin/grep -f - file1

with a space between f and - to see if that makes a difference, but I suspect not. It seems you implementation does not support the - sign to read from stdin.

Alternatively you could try this:

Code:

/usr/xpg4/bin/grep -f <(/usr/xpg4/bin/sed 's/^/^/' file2) file1

which will work from a shell that is either bash or ksh (maybe only ksh93) if your platform supports it.

If that does not work you can try a temporary file:

Code:

usr/xpg4/bin/sed 's/^/^/' file2 > file2.tmp; /usr/xpg4/bin/grep -f file2.tmp file1; rm file2.tmp