the /tmp folder and emptying it?

Discussion in 'Technical' started by edge, Sep 23, 2006.

  1. edge

    edge Active Member Moderator

    One of my home made (web) applications running on Debian Sarge is using the /tmp folder to store temporarly files in (they are not needed anymore after beeing processed)

    Do I need to create a cron job to empty the /tmp directory, or is this beeing taken care of by itself (if so, I still see some files in it from several days ago!)?
     
  2. domino

    domino New Member

    I edited the sysklogd to clean the /tmp dir on every reboot. I added the following it. It has to be at a specific line and I have to refer to my box when I get home.
    Code:
    rm -fr /tmp/* /tmp/.??*
    I don't think it's a wise idea to clean the directory during production use.
     
  3. edge

    edge Active Member Moderator

    Hi domino,

    Hmm clean the /tmp dir on every reboot...

    Not sure if this is an option for me.. My servers do normaly not do a reboot often! (one of the servers is up over 100 days now)

    I guess I need to change some code in my application, and let it use an other "temp" directory that I can clean every 6hrs or so.
     
  4. domino

    domino New Member

    Yea, kinda figured that but I first thought it was a home server and not a dedicated box. I think I remember a read a few years back with using a cron to clean a user /tmp directory. But I think it was on a RH 9 box. I'll post it when I find it. Sorry for the misunderstanding.
     
  5. falko

    falko Super Moderator ISPConfig Developer

    To go sure you can create a cron job. Create a shell script like this one:

    Code:
    #!/bin/sh
    
    for file in "$( /usr/bin/find /tmp -type f -mtime +2 )"
    do
      rm -f $file
    done
    
    exit 0
    make it executable, and put it in a cron job. It deletes all files in /tmp that are older than two days.
     
  6. edge

    edge Active Member Moderator

    Thanks once again falko!

    Script is up and running :)
     
  7. sjau

    sjau Local Meanie Moderator

    Why doesn't this work here:

    I try to remove all files in the backup folder that are older than xx days...
    Instead of running just the rm command I first wanted to echo it to see it works fine... however nothing is being returned...
     
  8. edge

    edge Active Member Moderator

    I think you will need to set the var $file 1st to echo it.
    Now it showing $file, but it's empty!

    maybe something like this

    Code:
    #!/bin/sh
    
    for file in "$( /usr/bin/find /backup/ -type d -mtime +3 )"
    do
    showIt=$file
    # rm -Rf $file
    echo $showIt
    done
    
    exit 0 
    
     
    Last edited: Nov 30, 2006
  9. falko

    falko Super Moderator ISPConfig Developer

    You can also try to use the full path to echo (you can find out by running
    Code:
    which echo
    ).
     
  10. sjau

    sjau Local Meanie Moderator

    Hmmm, does not work :(
     
  11. falko

    falko Super Moderator ISPConfig Developer

    What's the output of
    Code:
    /usr/bin/find /backup/ -type d -mtime +3
    ?
     
  12. sjau

    sjau Local Meanie Moderator

    it lists all folders and subfolders....

    However I want to rm -Rf all folders taht are older than xxx days (and in /backup/ only)
     
  13. falko

    falko Super Moderator ISPConfig Developer

    But only from /backup, right?

    What happens, if you run this:

    Code:
    for file in "$( /usr/bin/find /backup/ -type d -mtime +3 )"
    do
    echo $file
    done
    directly on the shell (not from a script)?
     
  14. sjau

    sjau Local Meanie Moderator

    nothing happens :)

    Well process is running but nothing is being echoed... I let it run now for a while...
     
  15. falko

    falko Super Moderator ISPConfig Developer

    Is it possible that there are no files older than 3 days?
     
  16. sjau

    sjau Local Meanie Moderator

    It took first a while then it started outputting...

    but the problem remains: I only want to search in /backup/ for folders older than xxx days but not recursively...
     
  17. falko

    falko Super Moderator ISPConfig Developer

    Ah, ok. I think you have to play around with the -depth switch in find (see
    Code:
    man find
    ).
     
  18. djtremors

    djtremors ISPConfig Developer ISPConfig Developer

    This is old I know but for those who want to know, there is no need to script this to get the same function as find is quite powerful to do the same job, and the last post is correct... 'man' is your friend.

    find /backup/ -type f -mtime +3 -maxdepth 1 -exec rm -f {} \;

    (-type f) remove files (-mtime +3) older than 3 days (-maxdepth 1) in this directory branch depth only (-exec rm -f {} \;) and execute a rm for each file found.
     
  19. sjau

    sjau Local Meanie Moderator

    Thx for the code djtremors... however I have found meanwhile the solution myself :)
     

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