[SOLVED] what does $# means?

hd_pulse · 05-29-2011, 11:33 AM

Hello,
I came across a code where it was written something this:

Quote:

if [ $# -eq 0 ]

what does $# means?

Also what is the function of cmp command ? I googled but could'nt understand the explanation. Syntaxes for it.?

Nylex · 05-29-2011, 11:37 AM

colucix · 05-29-2011, 01:19 PM

From man cmp:

Code:

NAME
       cmp - compare two files byte by byte

SYNOPSIS
       cmp [OPTION]... FILE1 [FILE2 [SKIP1 [SKIP2]]]

Example:

Code:

$ cat > file1
hello world
$ cat > file2
hello word
$ cmp -b file1 file2
file1 file2 differ: byte 10, line 1 is 154 l 144 d

what exactly is not clear?