Very Computer

1. shell built ins

hi everyone,

i still try to get which done so that it knows about the shell built-ins
like exit etc...
i worked on it but still it won't run. i am pretty sure it is just a small
mistake. please help me out here.

thanks a lot
joyce

opath=$PATH
PATH=
($1 2> /dev/null ) && (echo 'built in shell' :exit 0)
echo x
PATH=/bin:/usr bin
case $# in
0)      echo 'Usage: which command' 1>&2; exit 2
esac
                for i in `echo $opath | sed  's/^:/.:/
                                                             s/::/:.:/g
                                                             s/:$/:./
                                                             s/:/ /g'`
do
                      if test -x $i/$1             # this is /bin/test
                          then                         # or /usr/bin/test
only
               echo $i/$1
               exit 0              # found it
      fi
done
exit 1                              #not found

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