| #!/bin/sh |
| |
| SEDLIST="/usr/bin/sed /bin/sed sed gnused gsed" |
| |
| for SED in $SEDLIST |
| do |
| if ! test -x $SED ; then |
| SED=$(which $SED 2> /dev/null) |
| if ! test -x "$SED" > /dev/null ; then |
| SED="" |
| continue |
| fi |
| fi |
| |
| tmp=$(mktemp) |
| echo "HELLO" > $tmp |
| $SED -i -e "s/HELLO/GOODBYE/" $tmp >/dev/null 2>&1 |
| RESULT=$(cat $tmp) |
| |
| if test $? != 0 ; then |
| SED="" |
| elif test -e ".sedtest-e" ; then |
| rm -f ".sedtest-e" |
| SED="" |
| elif [ "x$RESULT" = "x" ] || [ "$RESULT" != "GOODBYE" ] > /dev/null ; |
| then |
| SED="" |
| fi |
| |
| rm -f $tmp |
| if [ ! -z "$SED" ] ; then |
| break |
| fi |
| done |
| echo $SED |
