Hi everyone,
I want to pass an option flag to a process startup script to tell it to run
one particular program within the script in the background or not.
I discovered a long time ago that I cannot simply set
something like BgOpt='&' and stick it at the end of the
target command within the script -- it just doesn't jive
with the deep magic of how sh/ksh scans and parses a command line.
In the past I have simply resigned myself to using an if-then-else
construct with dupe copies of the entire command, one with the '&'
at the end, and one without:
if [[ $BgFlag == y ]]
then
myprogram options_and_args &
else
myprogram options_and_args
fi
I never liked the duplication, but I like working code more, so I have
lived with it.
But now I have a really long command to run, and duplicating it just seems
too prone to maintenance errors.
I suppose I could wrap it in a function and put the function in the above
if-then-else, but since I have always wondered if there was a single
line solution
for this task, I have finally decided to write this up and put it out there.
One last point I should mention: this might have to be run in a /bin/sh
(Bourne) script,
so I need to know if any solution has a portability issue.
Regards,
Mario DeFazio
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