file size limit

[Jason_484]

hey,
can anyone tell me how can i restrict a text file size to 2 mb? is there any script i can run from time to time tht checks the file ?

[A. Clay Stephenson · Accepted solution]

You can set a ulimit but that will limit the maximum size of all files. Files can be read of any size but can only be written upto ulimit blocks by child processes. e.g.
ulimit -f 4096
would limit files to 4096 512-byte blocks (2MB).

You could put this in the user's .profile and the user would be allowed to decrease but not increase the value.

[Bill Hassell]

Be sure to put this ulimit into a specifc user's $HOME/.profile, and not into /etc/profile. If it was in /etc/profile, every user (including application users like oracle, email, etc,) will be affected. Also note that many programs do not handle a file size limit gracefully...they usually abort and lose all the data. Very few will simply truncate and quit.

[Jason_484]

thanks for ur expertise guys

[Jason_484]

thanks