I'm trying to create
daemon processes with ksh as follows:
Code:
function start
{
# start script as co-process and pass an argument
./1.ksh $1 |&
# print pid
print $!
# move the file descriptors of the co-process to 4 and 5
exec 4>&p
exec 5<&p
# then close them
exec 4>&-
exec 5<&-
}
for server in $servers
do
start "arg1"
done
If script 1.ksh only contains a sleep, then it works. But if I have multiple statements, several ssh calls that take a while (>10min) for example, than the 1.ksh scripts just exits without finishing. This happens shortly after the calling script has finished. If I keep the calling script open they finish correctly. After the child scripts have finshed the calling script also finishes.I added the following after the call to the start routine:
Code:
while read -ru5
do
print -r $line
done
(and I commented out the closing of the file descriptors)
than it works. I want the 1.ksh processes to become
daemon processes and finish and I want the calling script to exit.
I run it on a SunOS 5.8 server with ksh 88.
