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Full Discussion: Bash : Why are spaces important here ?
Top Forums Shell Programming and Scripting Bash : Why are spaces important here ? Post 302932225 by balajesuri on Tuesday 20th of January 2015 05:02:05 AM
Old 01-20-2015
Quote:
Originally Posted by John K
BTW ..What is ++ operator as in (( ++count )) called ?
It's known as a pre-increment operator. It means, first increment the value in count and then use it.
On the contrary, there's a post-increment operator ((count++)); which means use it first and then increment it.

It will be clear in the following example:
Code:
[user@host ~]$ x=1
[user@host ~]$ y=$((++x))
[user@host ~]$ echo $x $y
2 2
[user@host ~]$ x=1
[user@host ~]$ y=$((x++))
[user@host ~]$ echo $x $y
2 1
[user@host ~]$

These 2 Users Gave Thanks to balajesuri For This Post:
John K rbatte1
 

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LEARN ABOUT X11R4

innetgr

innetgr(1)							   NSS utilities							innetgr(1)

NAME

       innetgr - Check netgroup membership

SYNTAX

       innetgr [-d domain] [-h host] [-u user] [-v] <netgroup>

DESCRIPTION

       innetgr	checks if the specified user, host or domain is a member of the given netgroup. The program does not produce any output unless the
       verbose ( -v ) flag is given.

       The exit status is 0 if the user/host/doman combination is a member of the given netgroup.  Exit status is 1  if  the  combination  is  not
       found in the group, and 2 if one of the arguments are invalid.

OPTIONS

       --domain <domain> | -d <domain>
	      Search in the given domain.

       --host <host name> | -h <host name>
	      Search for the given host name.

       --user <user name> | -u <user name>
	      Search for the given user name.

       --verbose | -v
	      Enable verbose mode

       --version | -V
	      Show version information.

EXAMPLES

       To check if the current host is listed in the netgroup allhosts, use this command line:

       if innetgr -h `uname -n` allhosts ; then echo "Found"; fi

CONFORMING TO

       A innetgr program first appeared in NetBSD 1.4.

AUTHORS

       Petter Reinholdtsen <pere@hungry.com>

SEE ALSO

       getent(1) netgroup(1) innetgr(3) netgroup(5) nsswitch.conf(5)

Petter Reinholdtsen							0.7								innetgr(1)
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