NOOP operator in Bash:

A standard NOOP Operator in bash is colon ":".

Try out:

: echo test or anything :)

[m@root]$ a=1
[m@root]$ b=2
[m@root]$ c=3
[m@root]$ echo $a; : echo $b ; echo $c
1
3

Thanks,

Kailash Chandak