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Shell Programming and Scripting

Is there a maximum length for a shell script command?

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Top Forums Shell Programming and Scripting Is there a maximum length for a shell script command?
# 8  
Old 08-05-2012
Thanks a lot. Actually I had been using crontab. There the escape was not working!
# 9  
Old 08-06-2012
Generally it's good practice to not have too much code in the crontab entry its self. Write a script (eg /usr/local/bin/purge_old_reports.sh) and call this from the crontab entry.

Code:
# Archive and purge old spool jobs each Sunday morning
12 06 * * 0 /usr/local/bin/purge_old_reports.sh >> /var/log/purge_old_reports.log 2>&1

# 10  
Old 08-07-2012
Quote:
Originally Posted by Chubler_XL
Generally it's good practice to not have too much code in the crontab entry its self. Write a script (eg /usr/local/bin/purge_old_reports.sh) and call this from the crontab entry.

Code:
# Archive and purge old spool jobs each Sunday morning
12 06 * * 0 /usr/local/bin/purge_old_reports.sh >> /var/log/purge_old_reports.log 2>&1


You're right. But that perhaps doesn't answer my question. Is there a way to break the command line for crontab?
# 11  
Old 08-07-2012
All the usual ways, plus, % is as special character in cron.
# 12  
Old 08-07-2012
cron stops reading the command at the first unescaped %.
example
Code:
1 2 * * 6 /path/to/script.sh %
inputfile
outputfile

inputfile and outpfile are read by the program through stdin (keyboard)
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