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Full Discussion: Confusion over a small conditional script
Top Forums Shell Programming and Scripting Confusion over a small conditional script Post 302121318 by amit4g on Wednesday 13th of June 2007 05:21:00 AM
Old 06-13-2007
Confusion over a small conditional script
Hi,

I was going through a file containing hundreds of lines of codes having conditional statement written as:

log()
{
echo $@
}

num=$(/usr/bin/rsh <one_machine> -l root 'ls -d /home/user/db* 2> /dev/null' | wc -w)
(( num > 0 )) && log "db info:"

so,if here the return value(stored in variable "num" is greater than 0) then
"db info"will be echoed on the screen.
But if i need to do more commands execution if the return value is > 0 then how can i add more statements here.

In past i've used something like this:
num=$(/usr/bin/rsh <one_machine> -l root 'ls -d /home/user/db* 2> /dev/null' | wc -w)
if [ "$num" -gt "0" ]; then
statement 1
statement 2
..................

statement N
fi

but how this can be used here ?

~amit
 

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LEARN ABOUT BSD

nislog

nislog(1M)						  System Administration Commands						nislog(1M)

NAME

       nislog - display the contents of the NIS+ transaction log

SYNOPSIS

       /usr/sbin/nislog [-h num | -t num]  [-v] [directory...]

DESCRIPTION

       nislog  displays  the  contents of the NIS+ server transaction log on the standard output. This command can be used to track changes in the
       namespace. The /var/nis/trans.log file contains the transaction log maintained by the NIS+ server. When updates occur, they are	logged	to
       this  file  and	then  propagated  to replicas as log transactions.  When the log is checkpointed, updates that have been propagated to the
       replicas are removed.

       The nislog command can only be run on an NIS+ server by superuser. It displays the log entries for that server only.

       If directory is not specified, the entire log is searched. Otherwise, only those logs entries that correspond to the specified  directories
       are displayed.

OPTIONS

       -h num	       Display num transactions from the ``head'' of the log. If the numeric parameter is  0, only the log header is displayed.

       -t num	       Display	num transactions from the ``tail'' of the log. If the numeric parameter is  0, only the log header is displayed.

       -v	       Verbose mode.

FILES

       /var/nis/trans.log      transaction log

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWnisu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       nis+(1), rpc.nisd(1M), nisfiles(4), attributes(5)

NOTES

       NIS+  might  not  be  supported in future releases of the SolarisTM Operating Environment. Tools to aid the migration from NIS+ to LDAP are
       available in the Solaris 9 operating environment. For more information, visit http://www.sun.com/directory/nisplus/transition.html.

SunOS 5.10							    12 Dec 2001 							nislog(1M)
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