topic Re: If Then Else Statement Help in Operating System - HP-UX

If Then Else Statement Help

Jeff Paciolla_1 — Thu, 08 Nov 2001 17:45:35 GMT

This is probably a very simple question, but any help will be appreciated. Does anybody have an example of an if statement where the variable could be more than one value.

Here is an example one value that works.
******************************
NAME=$1

if [ $NAME = "John" ] ; then
echo $NAME
else
exit 0
fi
****************************

What i need to do is add another possible value in the if statement where $NAME could equal "John or "Jane".

I can't seem to get the syntax correct.

Thanks
Jeff

Re: If Then Else Statement Help

James R. Ferguson — Thu, 08 Nov 2001 17:50:38 GMT

Hi Jeff:

How about this:

if [ "$I" = jim -o "$I" = james ]
then
echo "that's me!"
else
echo "I am not me"
fi

Regards!

...JRF...

Re: If Then Else Statement Help

Bill McNAMARA_1 — Thu, 08 Nov 2001 17:56:05 GMT

#!/usr/bin/ksh

export NAME=$1

if [ $NAME = "John" ] ; then
echo "John $NAME "
elif [ $NAME = "Jane" ] ; then
echo "Jane: $NAME"
exit 0
fi

(man ksh / look for case if there is multiple options)
Later,
Bill

Re: If Then Else Statement Help

Jeff Paciolla_1 — Thu, 08 Nov 2001 17:56:15 GMT

James - What does the -o do in the if statement?
Thanks
Jeff

Re: If Then Else Statement Help

James Beamish-White — Thu, 08 Nov 2001 17:56:25 GMT

Hiya,

Try

if [ "$NAME" = "John" || "$NAME" = "Jane"] ; then
echo $NAME
else
exit 0
fi

I think && is the AND....

Note that the /sbin/init.d directory has loads of HP startup scripts that are a good start to look for syntax :-)

Cheers,
James

Re: If Then Else Statement Help

A. Clay Stephenson — Thu, 08 Nov 2001 17:58:11 GMT

Hi Jeff:

if [ "${name}" = "John" -o "${name}" = "Jane" ]
then
echo "Ok"
else
echo "Bad"
fi

Note the quotes around "${name}" - they protect you in case the variable is ever null;

Here's a variant with numeric comparisons using and

if [ ${a} -ge 1 -a ${a} -le 10 ]
then
echo "${a} is in range"
else
echo "${a} is out of range"
fi

Re: If Then Else Statement Help

Roger Baptiste — Thu, 08 Nov 2001 17:59:42 GMT

What i need to do is add another possible value in the if statement where $NAME could equal "John or "Jane". >

use -o option for giving the OR choice.
[ $NAME = "John" -o $NAME = "Jane" ]

everything else remaining the same.

(you can do a man on ksh for other related
options)

-raj

Re: If Then Else Statement Help

S.K. Chan — Thu, 08 Nov 2001 18:02:00 GMT

This could work too ..

[[ $NAME = John || $NAME = Jane ]] && echo $NAME || exit

A one-liner without the "if" and the "then"

Re: If Then Else Statement Help

Victor BERRIDGE — Thu, 08 Nov 2001 18:04:08 GMT

>What does the -o do in the if statement?

-o stands For OR ... -a => AND

All the best

Victor

Re: If Then Else Statement Help

James R. Ferguson — Thu, 08 Nov 2001 18:06:26 GMT

Hi Jeff:

The '-o' is "or". '-a' denotes "and". Have a look at the man pages for 'test' ('man test').

Regards!

...JRF...

Re: If Then Else Statement Help

mike boswell_3 — Fri, 23 Apr 2004 07:53:32 GMT

"man test"

good advice

Re: If Then Else Statement Help

KapilRaj — Fri, 23 Apr 2004 08:12:49 GMT

Mike .... the last comment before urs was in 2001 !!!!!!!

kaps