Too many arguments


 
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# 1  
Old 02-15-2012
Too many arguments

hi I have this code

Code:
a="a b c"
set -- $a
if [ "$@" = "" ] ; then
    echo empty
fi

why is it line 3 reports "test: [: too many arguments"? Smilie

Thanks!
# 2  
Old 02-15-2012
Code:
a="a b c"
set -- ${a}
[[ "x${@}" == "x" ]] && echo empty

# 3  
Old 02-15-2012
Quote:
Originally Posted by huaihaizi3
Code:
a="a b c"
set -- ${a}
[[ "x${@}" == "x" ]] && echo empty

nice, just need to double the '[' and ']' and no need for the 'x'

thanks!
# 4  
Old 02-15-2012
Use $* instead of $@ :
Code:
a="a b c"
set -- $a
if [ "$*" = "" ] ; then
    echo empty
fi

Jean-Pierre.
# 5  
Old 02-15-2012
Quote:
Originally Posted by h0ujun
nice, just need to double the '[' and ']' and no need for the 'x'

thanks!
That works in ksh and bash, but not in other Posix shells and you should use double == then..

I would use:
Code:
if [ $# -eq 0 ] ; then


Last edited by Scrutinizer; 02-15-2012 at 06:00 AM..
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