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1 #!/usr/local/plan9/bin/rc3 flags=()4 while(! ~ $#* 1 && ~ $1 -*){5 flags=($flags $1)6 shift7 }9 switch($#*){10 case 011 echo 'usage: g [flags] pattern [files]' >[1=2]12 exit 113 case 114 9grep -n $flags -- $1 *.[Cbchm] *.cc *.py *.tex *.ms *.java /dev/null \15 |[2] {9grep -v '^(grep: can''t open \*|grep: \*\.)' >[1=2]; status=0}16 case *17 9grep -n $flags -- $* /dev/null18 }