If $1 = "" I get an error, Help:-)

[Rouben Rostamian]

In article <311 at alix.UUCP> isolated at alix.UUCP (20 James D. Corder) writes:
 >
 >I have a sh program that wants input at the command line.
 >However, I need an error out if the unser does not input at the command line.
 >ie:
 >
 >if [ ${1} = "" ]
 >then
 >	echo "Please enter your option now."
 > ...etc...

  Replace the first line with:

     if [ "${1}" = "" ]

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