grep command on Solaris 9

Question

I faced a strange behavior of a grep command on Solaris 9. For example , I have a host file with two lines:

1.1.1.1 host

1.2.3.4 host-MY

I\'d like to gre

Answer 1

You're probably not calling the good grep executable. Run which grep to know which one you are running. On my Solaris box, the official grep is in:

> which grep
/usr/xpg4/bin/grep

The man page on my Solaris box refers to both /usr/bin/grep and /usr/xpg4/bin/grep. Only the latest supports these options.