Cron bash脚本-从未执行过查找命令

Question

Please look at my script to grab and parse xmltv data:

#! /bin/bash

/bin/rm -f /home/hts/webgrab/multiple/out/*.xml

/home/hts/webgrab/multiple/1/run.sh &
/home/hts/webgrab/multiple/2/run.sh &
/home/hts/webgrab/multiple/3/run.sh &
/home/hts/webgrab/multiple/4/run.sh &
/home/hts/webgrab/multiple/5/run.sh &
/home/hts/webgrab/multiple/6/run.sh &
/home/hts/webgrab/multiple/7/run.sh &
/home/hts/webgrab/multiple/8/run.sh &
/home/hts/webgrab/multiple/9/run.sh &
/home/hts/webgrab/multiple/10/run.sh &
/home/hts/webgrab/multiple/11/run.sh &
/home/hts/webgrab/multiple/12/run.sh &
/home/hts/webgrab/multiple/13/run.sh &
/home/hts/webgrab/multiple/14/run.sh &
/home/hts/webgrab/multiple/15/run.sh &
/home/hts/webgrab/multiple/16/run.sh &
/home/hts/webgrab/multiple/17/run.sh &
/home/hts/webgrab/multiple/18/run.sh &
/home/hts/webgrab/multiple/19/run.sh &
/home/hts/webgrab/multiple/20/run.sh &
/home/hts/webgrab/multiple/21/run.sh &


wait

/usr/bin/tv_cat /home/hts/webgrab/multiple/out/*.* > /home/hts/webgrab/multiple/out/guide.xml

#copy result with timestamp
/bin/cp -rf /home/hts/webgrab/multiple/out/guide.xml "/var/www/guide/guide-$(date +"%Y%m%d").xml"

sleep 10

#find and rename file 5 day old
/usr/bin/find /var/www/guide -type f -name 'guide*' -mtime 5 -execdir /bin/mv {} /var/www/guide/pl.xml ';' 2> /home/hts/epg.log

As you can see, multiple webgrab program instances are executed, script waits for all of them to finish. Then, results are joined into single xmltv file (guide.xml), then guide.xml copied to /var/www/guide directory with timestamp. Last step:

/usr/bin/find /var/www/guide -type f -name 'guide*' -mtime 5 -execdir /bin/mv {} /var/www/guide/pl.xml ';' 2> /home/hts/epg.log

finds old file from 5 days ago -if exsists ( -mtime 5 ) and renames it (with overwrite old one) to pl.xml .

Problem: it looks like last command is never executed. As a my cron job result, I'm getting only new timestamp file, but renamed pl.xml is always missing. But if I run find command as above from command line, old file is renamed correctly to pl.xml

Any ideas what's wrong here? Full command paths are included to make sure they will run with cron. But it did not help, find and rename command does not work. Old file exists for sure, because it has been created 5 days earlier, but from some reason, rename command does not work from cron inside this script.

Answer 1

I know what's wrong, find command is the culprit - -mtime 5 options indeed returns files 5 days old. However, it also takes care to time, not only date. So, as long as that's not full 5 days ago (including hour of day), find won't return anything. My possible solutions:

• make sure I call find at spefic time to get always full 5 days
• don't use mtime and parse timestamps from filenames instead (that seems to be simplest and most safe solution)
• find some way to force find command to ommit hours and use date only for its calculations (I actually have no idea how to do that)