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Old 11-16-2009, 06:07 PM   #1
sebasg91
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Cron + task timing / order


Hi guys,

I've been doing my research, however I couldn't find the answer.

I created a file which basically copy a full directory (700Mb approx.),
then I put all together with tar, compress with gzip, and finally I erase the temporary directory.

I am trying to do all together in a file, but it seems to start with the 2nd operation before finishing the first one. Therefore, sometimes I have partials .tar, unreadable .gz, etc.

Does is make sense? Is there some kind of pause I can use in between commands? Should I create 3 / 4 different enters in the cron tab?
This last option of course that would work, yet doesn't seems to me the better way to do it.

Thanks
Sebas.
 
Old 11-16-2009, 06:25 PM   #2
AlucardZero
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Post your file and cron entries.
 
Old 11-16-2009, 06:27 PM   #3
rweaver
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How about requiring the first set of commands to finish before executing the second?

cp /home/blah /tmp/blah && tar cfvz /backup/`date +%Y%m%d`.tgz /tmp/blah && rm -Rf /tmp/blah
 
Old 11-16-2009, 09:27 PM   #4
sebasg91
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Thanks guys! I don't have my files right here (they are at work).

I'll try it tomorrow and let you know.

I think that rweaver's idea will definitely work!

Cheers,
Sebastian
 
Old 11-19-2009, 07:14 PM   #5
sebasg91
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Hi guys, it's me again... I'm going insane with this, sthing really wired (unless too me) is happening.


This is my crontab so far:
# m h dom mon dow command
0 2 * * * /home/lager/backups/capitalBackUp


Then, this is capitalBackUp executable file:
today=$(date +%Y%m%d)

mkdir /home/lager/backups/$today && mkdir /home/lager/backups/$today/tmp && cp -R /home/lager/applications/capital/* /home/lager/backups/$today/tmp && tar cvfz /home/lager/backups/$today/capital.tar /home/lager/backups/$today/tmp && gzip -9 /home/lager/backups/$today/capital.tar && rm -Rf /home/lager/backups/$today/tmp


Then it turns that if I run the file by myself, I get as result the file capital.gz (~=100Mb), BUT if the file is run by cron, I get as final result a file capital.tar (=9.1Mb --> always same size) and all the files in the directory TMP.

Does it make any sense? Some reasonable explanation?

I hope you can help, coz I have no clue!

Thanks!
Sebas.
 
Old 11-20-2009, 03:14 PM   #6
rweaver
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Quote:
Originally Posted by sebasg91 View Post
today=$(date +%Y%m%d)

mkdir /home/lager/backups/$today && mkdir /home/lager/backups/$today/tmp && cp -R /home/lager/applications/capital/* /home/lager/backups/$today/tmp && tar cvfz /home/lager/backups/$today/capital.tar /home/lager/backups/$today/tmp && gzip -9 /home/lager/backups/$today/capital.tar && rm -Rf /home/lager/backups/$today/tmp
Try this:

Code:
#!/bin/bash
today=$(date +%Y%m%d)

mkdir -p /home/lager/backups/$today
tar cf /home/lager/backups/$today/capital.tar /home/lager/applications/capital/*
gzip -9 /home/lager/backups/$today/capital.tar
 
  


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