Thank you. This script only work on regular enviroment like sh, ksh and bash. When I put on cron job I got error message: /bin/sh: -c: line 0: unexpected EOF while looking for matching `'' any ideal (CENTOS 4 and 5)? --- 10/1/5 (二)，John R Pierce <pierce at hogranch.com> 寫道： > 寄件者: John R Pierce <pierce at hogranch.com> > 主旨: Re: [CentOS] setup schedule cron job every other week? > 收件者: "CentOS mailing list" <centos at centos.org> > 日期: 2010年1月5日,二,下午7:18 > mcclnx mcc wrote: > > We have CENTOS 5 on DELL server. I tried to > setup schedule cron job to run every other week on Saturday > (NOT first and third week ). > > > > lets see... > > date +'%U' > > returns the week number of the year, 00-51... and (( > expression )) > evaluates arithmetic expressions, returning 'true' if they > are non-zero. > weeknumber & 1 will be 0 for even weeks and 1 for odd > weeks. > > So... set up your cron job to run every Saturday, and in > the beginning > of the job script, do something like... > > (( $(date +'%V') & 1 )) && exit > > which will exit if the week of the year is even. or, in the > front of > your crontab line, something like.... > > 30 1 * * 6 (($(date +'%V')&1)) && > command-you-want-to-execute-on-even-weeks > > > > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > ___________________________________________________ 您的生活即時通 － 溝通、娛樂、生活、工作一次搞定！ http://messenger.yahoo.com.tw/