$1 usage

[unixwhoopie]

I am not sure how $1 works. If I have something like this in a shell script, what is $1?

if [ -z "$1" ]
then
echo "Not found"
else
DATFILE=${DAT_DIR}/$1
fi

thanks

 

[vgersh99]

1. if inside the scope of the shell function, $1 means the FIRST argument passed to a function

2. if not inside the of the shell function, $1 refers to the script's FIRST command line argument

vlad
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