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| [[Anchor(faq25)]] == How can I access positional parameters after $9? == Use {{{${10} }}}instead of {{{$10}}}. This works for ["BASH"] and KornShell, but not for older BourneShell implementations. Another way to access arbitrary positional parameters after $9 is to use {{{for}}}, e.g. to get the last parameter: {{{ for last do : # nothing done echo "last argument is: $last" }}} To get an argument by number, we can use a counter: {{{ n=12 # This is the number of the argument we are interested in i=1 for arg do if [ $i -eq $n ] then argn=arg break fi i=`expr $i + 1` done echo "argument number $n is: $argn" }}} This has the advantage of not "consuming" the arguments. If this is no problem, the {{{shift}}} command discards the first positional arguments: {{{ shift 11 echo "the 12th argument is: $1" }}} Although direct access to any positional argument is possible this way, it's hardly needed. The common way is to use {{{getopts(3)}}} to process command line options (e.g. "-l", or "-o filename"), and then use either {{{for}}} or {{{while}}} to process all arguments in turn. An explanation of how to process command line arguments is available here: http://www.shelldorado.com/goodcoding/cmdargs.html |
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