Crontab is not working in printf

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# 1  
Old 01-21-2013
Crontab is not working in printf

hi, i have a script as:

printf '%s -> %s\n' "$(date '+%Y-%m-%d %H:%M')" "$(/opt/gcsw/status -ne | fgrep 'State:2' | wc)"

which gives output as: 2013-01-18 13:00 -> 80 480 6529 and it is working fine.

now I want to put this into cronjob and write the output to a file in every 5 minutes:
0,5,10,15,20,25,30,35,40,45,50,55 * * * * printf '%s -> %s\n' "$(date '+%Y-%m-%d %H:%M')" "$(/opt/gcsw/status -ne | fgrep 'State:2' | wc)" >> /var/tmp/gcsw/status.txt

i want to see the output as:
2013-01-18 13:00 -> 80 480 6529
2013-01-18 13:05 -> 85 480 6529
2013-01-18 13:10 -> 80 423 6329
2013-01-18 13:15 -> 71 460 6129

but file is not being updated Smilie i think there is a problem with printf with cronjob. any help?

Last edited by gc_sw; 01-21-2013 at 05:18 AM..
# 2  
Old 01-21-2013
Any error msgs? Pls keep in mind that processes launched by cron run in a reduced environment, and perhaps in another shell, so are you sure all commands are on the PATH var?
# 3  
Old 01-21-2013
there is not any error message but file is not being updated Smilie i didnot assign anything with PATH how can i solve it?
# 4  
Old 01-21-2013
a) did you look into the syslog files for cron entries?
b) enter PATH=... into crontab (cf man crontab)
# 5  
Old 01-21-2013
a) there is no entry related to cron in syslog
b) $PATH is defined as

can we modify the command without using printf?
# 6  
Old 01-21-2013
The % character has a special meaning in crontab entries.
man crontab

You need to escape each % as \%;
'text1%text2' becomes 'text1'\%'text2' and "text3%text4" becomes "text3"\%"text4" (i.e. two strings with a \% in between).
printf '%s -> %s\n' "$(date '+%Y-%m-%d %H:%M')" ...

printf \%'s -> '\%'s\n' "$(date '+'\%'Y-'\%'m-'\%'d '\%'H:'\%'M')" ...

This is so ugly that you better put the original code in an executable script, and run the script from the crontab.

Last edited by MadeInGermany; 01-21-2013 at 07:48 AM..
These 2 Users Gave Thanks to MadeInGermany For This Post:
# 7  
Old 01-21-2013
i have created a file (/var/tmp/gcsw/ and write:
printf '%s -> %s\n' "$(date '+%Y-%m-%d %H:%M')" "$(/opt/gcsw/gwstatus -ne | fgrep 'State:2' | wc)" >> /var/tmp/gcsw/status.txt

and created a cronjob as:
0,5,10,15,20,25,30,35,40,45,50,55 * * * * /var/tmp/gcsw/

but output /var/tmp/gokhan/status.txt is not correct. so cronjob is not working Smilie

PS: when I manually run:
printf '%s -> %s\n' "$(date '+%Y-%m-%d %H:%M')" "$(/opt/gcsw/gwstatus -ne | fgrep 'State:2' | wc)" >> /var/tmp/gcsw/status.txt

it is successfully OK.
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