Shell Script for checking existance of a directory

Question

if[-d /abmusr06/abm/users/dywrk01/run_time];
   then
     echo "Pack installation Failed"
     exit(1)
fi

This the above code fine?

Answer 1

Assuming this is Bourne Shell (/bin/sh):

if [ -d /abmusr06/abm/users/dywrk01/run_time ]
then
    echo "Pack installation Failed"
    exit 1
fi

• Put spaces around the brackets: if [ -d. Think of [ as a (key)word - it needs to stand by itself. You wouldn't say ls-l, you say ls(space)-l.
• Use exit 1, not exit(1).
• The semicolons are unnecessary if everything is on separate lines.
• The above seems to work in Cygwin for me.

Answer 2

if [ -d "directory" ];then
 ....
fi