topic Re: shell script question?? in Operating System - HP-UX

shell script question??

Penny Patch — Tue, 18 Nov 2003 18:29:49 GMT

isReachable () {
commandlist="$@" ;
status="noproblem"
for command in $commandlist
do
echo "Testing $command"
location=`which $command 2>/dev/null`
echo $location
if [ "x$location" = "x" ]; then
echo
echo "*** System command \"$command\" could not be found ! ***"
echo
status="error"
fi
done
if [ "$status" = "error" ]; then
return 1;
else
return 0;
fi
}

##
# Get the OS
##
OS=`uname`

##
# Check for the presence of system commands
##
if [ "$OS" = "SunOS" ]; then
isReachable "unzip sameer /usr/ucb/ps showrev patchadd pkginfo grep find ls uname cat rm chmod ln bc hostname df
sed awk head cpio cut dc wc expr nawk uniq jar"
fi

result=$?

if [ "$result" = "1" ]; then
echo "The above listed missing command(s) are necessary.Please make sure that these commands are in the environment path."
echo " Exiting..."

On Solaris the â whichâ command writes to standard output instead of standard error and therefore isReachable returns a 0 even when the command is not found.

Can anybody please help me solve this problem?
Thanks in adv

Re: shell script question??

Michael Steele_2 — Tue, 18 Nov 2003 19:06:30 GMT

Hi Penny:

Could you repost the question? Last post got some garbage in it.

Thanks!

Re: shell script question??

Ron Kinner — Tue, 18 Nov 2003 23:15:53 GMT

What does it write to the standard output if which fails? Surely something like "File not found." Can you not test for that instead of your $Status?

if [ "$Location" = "File not found." ]; then
return 1;
else
return 0;
fi

Does
whereis -b
give you a different output?

Also my manual says you need to run this in csh so I would expect you might want to add

#!/bin/csh

as the first line.

Ron

Re: shell script question??

Madhu Sudhan_1 — Tue, 18 Nov 2003 23:55:30 GMT

Penny,
I think you need to check for the return code returned by isReachable function ,inside the if [ "$OS = "SunOS];
So, your script looks like,

if [ "$OS" = "SunOS" ]; then
isReachable "unzip sameer /usr/ucb/ps showrev patchadd pkginfo grep find ls uname cat rm chmod ln bc hostname df
sed awk head cpio cut dc wc expr nawk uniq jar"

result=$?

if [ "$result" = "1" ]; then
echo "The above listed missing command(s) are necessary.Please make sure that these commands are in the environment path."
echo " Exiting..."
fi

fi

-Madhu

Re: shell script question??

Michael Schulte zur Sur — Wed, 19 Nov 2003 11:49:13 GMT

Hi,

make these adjustments and it should run:
which $command > /tmp/check.$$ 2>&1
location=`grep -v "no ${command} in" /tmp/check.$$`

greetings,

Michael

Re: shell script question??

Michael Schulte zur Sur — Wed, 26 Nov 2003 10:59:21 GMT

Hi,

if the problem is solved, could you spare some points from the endless supply of points, HP has, for those, who could help you? ;-)

greetings,

Michael