50 lines
992 B
Text
50 lines
992 B
Text
# Sort the positional paramters.
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# Make sure the positional parameters are passed as arguments to the function.
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# If -u is the first arg, remove duplicate array members.
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sort_posparams()
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{
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local -a R
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local u
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case "$1" in
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-u) u=-u ; shift ;;
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esac
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# if you want the case of no positional parameters to return success,
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# remove the error message and return 0
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if [ $# -eq 0 ]; then
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echo "$FUNCNAME: argument expected" >&2
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return 1
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fi
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# make R a copy of the positional parameters
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R=( "${@}" )
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# sort R.
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R=( $( printf "%s\n" "${R[@]}" | sort $u) )
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printf "%s\n" "${R[@]}"
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return 0
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}
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# will print everything on separate lines
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set -- 3 1 4 1 5 9 2 6 5 3 2
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sort_posparams "$@"
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# sets without preserving quoted parameters
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set -- $( sort_posparams "$@" )
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echo "$@"
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echo $#
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# sets preserving quoted parameters, beware pos params with embedded newlines
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set -- 'a b' 'a c' 'x z'
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oifs=$IFS
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IFS=$'\n'
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set -- $( sort_posparams "$@" )
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IFS="$oifs"
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echo "$@"
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echo $#
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sort_posparams
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