unix shell variable $@

Shell Programming and Scripting
1

Hi All,
I have to debug a unix script file prepared originally by another person.
The script file uses the $@ variable which i guess is a standard Unix variable.

The command is something like this:
Java_PATH=<JAVA_PATH>

<JAVA_PATH>/bin/java com.ibm.ws.bootstrap.WSLauncher com.ibm.ws.webservices.tools.WSDL2Java "$@"

i need to know what does $@ signify?

2

for bash:

"$@" mean all arguments to current script
That is, "$@" is equivalent to "$1" "$2" ...

#!/bin/bash
echo "All args: $@"
echo "First arg: $1"
echo "Second arg: $2"

-----
$ script.sh 1 2 3 4

All args: 1 2 3 4
First arg: 1
Second arg: 2

man bash
/^\ +\@

3

Hi Drugplant,

Thanks for replying.
That explains the script.

4

But note that $@ is the same as $*; it must be quoted for it to be different.