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Editor: ormaaj
Comment: It's slightly easier to remember how backslashes work with single-quotes.
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[[Anchor(faq43)]]
== Removed. ==		 <<Anchor(faq43)>>
== Why does my crontab job fail? 0 0 * * * some command > /var/log/mylog.`date +%Y%m%d` ==
In many versions of {{{crontab}}}, the percent sign (%) is treated specially, and therefore must be escaped with backslashes:

{{{
0 0 * * * some_user some_command >"/var/log/mylog.$(date '+\%Y\%m\%d')"
}}}

See your system's manual ({{{crontab(5)}}} or {{{crontab(1)}}}) for details. ''Note: on systems which split the {{{crontab}}} manual into two parts, you may have to type {{{man 5 crontab}}} or {{{man -s 5 crontab}}} to read the part you need.''

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CategoryShell

Why does my crontab job fail? 0 0 * * * some command > /var/log/mylog.`date +%Y%m%d`

In many versions of crontab, the percent sign (%) is treated specially, and therefore must be escaped with backslashes: 

0 0 * * * some_user some_command >"/var/log/mylog.$(date '+\%Y\%m\%d')"

See your system's manual (crontab(5) or crontab(1)) for details. Note: on systems which split the crontab manual into two parts, you may have to type man 5 crontab or man -s 5 crontab to read the part you need.

CategoryShell

BashFAQ/043 (last edited 2014-04-29 02:10:28 by ormaaj)