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Old 03-01-2018, 07:03 PM   #1
mbelmer85
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Tar using Matching pattern and removing leading paths


I'm trying to backup the log files contained in /var/log while removing leading paths at creation.

without removing the leading paths I can do this simply with:

tar -cvf ~/backup.tar /var/log/*.log

unfortunately I can't seem to remove the leading paths. I have looked online and found using -C will change the working directory for the command but when I do so, it doesn't recognize the pattern glob and says it cannot find the file or directory *.log

tar -cvf ~/backup.tar /var/log/ *.log

I'm sure my syntax must be off and I've tried some silly variations.
 
Old 03-02-2018, 07:23 AM   #2
rtmistler
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I think if you go to the /var/log directory and perform that command this way, it may do what you want:
Code:
/var/logs:$ tar -cvf ~/backup.tar *.log
 
Old 03-02-2018, 07:56 AM   #3
pan64
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you can use --transform option to modify filenames, probably something like this:
Code:
tar -cvf ~/backup.tar --transform 's!/var/log!!' /var/log/*.log
not tested!
 
Old 03-04-2018, 02:07 AM   #4
MadeInGermany
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+1 for post#2.
Tip: cd in a subshell to preserve the current directory in the main shell.
Code:
pwd
(cd /var/log && tar -cvf ~/backup.tar *.log)
pwd
 
Old 03-06-2018, 02:24 AM   #5
AwesomeMachine
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You can use on extract
Code:
# tar xf --strip-components=NUMBER file.tar
to trim off the leading paths.
 
  


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