Script Help

[Nobody's Hero]

What does this mean in a script?

if [ "ping_status" ];

[baiju_3]

Which Script was it , perl , ksh ,sh ?


Regards ..bl.

[Nobody's Hero]

ksh

[Pete Randall]

Robert,

I can't decipher the [, &#93. Did you cut and paste, by any chance or is that the way it appears in the script?


Pete

[Geoff Wild]

The [ is really the square intro bracket [ and the 93 ]

Cut 'n'paste issue in the forums...

if [ "ping_status" ];

Rgds...Geoff

[Chan 007]

Provide the complete script, I guess there is a mistake/typo in what you have pasted..!!

Chan

[Nobody's Hero]

#! /bin/sh

host=`cat ipfile`
for item in $host
do
echo "Checking $host..."
ping_status=`ping $host 10|grep 'no answer'`
if [ "ping_status" ]; then
echo "$host NOT RESPONDING"
echo " "
continue
fi
echo "$host UP"

[Geoff Wild · Accepted solution]

Should be:

#! /bin/sh

host=`cat ipfile`
for item in $host
do
echo "Checking $host..."
ping_status=`ping $host 10|grep 'no answer'`
if [ "ping_status" ]; then
echo "$host NOT RESPONDING"
echo " "
continue
fi
echo "$host UP"

It is checking for a condition - if ping_status contains "no answer" then it will echo $host not responding.

Rgds...Geoff

[Sandman!]

Robert,

The test part (if statement) is missing some constructs alongwith an else and done statements.

=============================================
#! /bin/sh

host=`cat ipfile`
for item in $host
do
echo "Checking $host..."
ping_status=`ping $host 10|grep 'no answer'`
if [ "$ping_status" ]; then
echo "$host NOT RESPONDING"
else
echo "$host UP"
fi
done
=============================================

cheers!

[Geoff Wild]

Just realized this is for solaris - your if statement should have -ne 0

#! /bin/sh

host=`cat ipfile`
for item in $host
do
echo "Checking $host..."
ping_status=`ping $host 10|grep 'no answer'`
if [ "ping_status" -ne 0 ]; then
echo "$host NOT RESPONDING"
echo " "
continue
fi
echo "$host UP"
done



Rgds...Geoff