I am trying to write a script with the getopts options. It does everything I want it to except tell me when the specified user has logged off. I am not sure if I set the option wrong or if it is the if untill loop. Here is only part of the script (bash shell).
mailopt=FALSE
interval=60
logoff=FALSE
# process command line options
while getopts mtn: options
do
case "$options"
in
m) mailopt=TRUE;;
t) interval=$OPTAR G;;
n) logoff=TRUE;;
if [ "$logoff" = TRUE ]
then
until who | grep -v "^$user" > /dev/null
do
sleep 60
done
echo "$user has logged off"
fi
#like I said this is only the part I think has the problem. I also tried....until who | grep "^$user" > /dev/null = FALSE
mailopt=FALSE
interval=60
logoff=FALSE
# process command line options
while getopts mtn: options
do
case "$options"
in
m) mailopt=TRUE;;
t) interval=$OPTAR G;;
n) logoff=TRUE;;
if [ "$logoff" = TRUE ]
then
until who | grep -v "^$user" > /dev/null
do
sleep 60
done
echo "$user has logged off"
fi
#like I said this is only the part I think has the problem. I also tried....until who | grep "^$user" > /dev/null = FALSE