problem with egrep and fgrep

[Warren L Dodge]

I just ran into a problem where I was getting unsupported switch errors when
using gnu egrep.

I tracked it down to the contents of the egrep and fgrep files.

cat egrep 
#!/bin/sh
exec grep -E ${1+"$@"}

cat fgrep
#!/bin/sh
exec grep -F ${1+"$@"}

These two commands (egrep,fgrep) exec grep with switches to get the
functionality needed.

The problem is they do not specify the directory of the grep command. So in
my case it was using solaris8 /bin/grep instead of the grep which is in the
same directory as the egrep I specified on the command line.

This account I was using does not have the gnu tools in the PATH. However, it
runs scripts which use the gnu tools. I believe in the past this has
worked. I think the egrep and fgrep were links to grep rather then a small
script.

It seems that the script should use $0 to calculate the path for grep.