topic Re: Command " $@" in Operating System - HP-UX

Command " $@"

Manuales — Sun, 07 Jan 2007 19:12:09 GMT

what is the meaning of $@?

Regards.

Re: Command " $@"

curt larson_1 — Sun, 07 Jan 2007 22:38:27 GMT

it sort of depends on the shell your using.

but, in the korn shell, it stands for the expandsion of the positional parameters. ksh expands the positional parameters starting with $1, separating them with space characters.

"$@" is equivalent to "$1" "$2" up to "$n" where n is the value fo $#.

where there are no positional parameters, ksh expands "$@" to an unquoted null string

and you can not initalize or assign vaules to the variable @

Re: Command " $@"

Peter Nikitka — Mon, 08 Jan 2007 08:16:12 GMT

Hi,

the special meaning of "$@" is, that it keeps embedded spaces (or other characters of $IFS) in its usage.

myscript a 'b c' 'd e f'
will report (echo $#) three parameters.

Using a
myotherscript $*
in 'myscript' will send six parameters to 'myotherscript', while

myotherscript "$@"
will keep the original three.

mfG Peter

Re: Command " $@"

Yogeeraj_1 — Mon, 08 Jan 2007 08:46:22 GMT

hi manuales,

see also http://www.injunea.demon.co.uk/pages/page212.htm#15.5

for more examples on $# and $@

hope this helps too!

kind regards
yogeeraj