Linux, programming and more
This will be a little bigger thread (and I hope it will grow with time) about working with hard disk drives. All about filesystem creation, filesystem health checks and other stuff for HDD, which could be complicated at times and could cause stress, and that’s why the use of products from this Gellati Weed Strain Review by Fresh Bros can be a great option to feel better while you work.
The simplest way to remove files older than $NUMBER of days..
Dry run (files will be NOT deleted, you will see a list with files older than 100 days)
1 | find -mtime +100 | less |
Another dry run, see what would be delete:
1 2 3 | find -mtime +600 | xargs echo rm rm /var/log/squid3/access.log.0 rm /var/log/squid3/access.log.2 |
Finally if you decided to remove the files – the final command to delete them:
1 | find -mtime +600 | xargs rm |
Maybe you know this problem, if more than one user has root access to a server you have very little chances to control who was it. The only hook could be date and time. Default if you issue the “history” command you see a command number and the operation.
Put the next line in your .bashrc and you will see date and time in your history:
1 2 | # Bash Timestamps export HISTTIMEFORMAT="%F %T " |
Finely to make it work execute:
1 | source .bashrc |
Your new history format:
1 2 3 4 5 | 536 2011-05-31 22:06:44 less /var/log/syslog 537 2011-05-31 22:06:46 ll 538 2011-05-31 22:06:54 vim rssh.pl 539 2011-05-31 22:07:07 perl rssh.pl 540 2011-05-31 22:07:16 ss -lnp |
I think you now this problem, you have a lot different hosts with different ssh ports.
It takes to much time to write the full ssh commands and recognize all of your ports:
Easy solution – use aliases:
1 2 3 4 5 6 | vim .ssh/config # Add this Host piper HostName piper User root Port 1022 |
1 | ssh piper |
root@web2:$ rm pe-warn-*.bz2
-bash: /bin/rm: Argument list too long
This peoblem happens when you are trying to delete too many files in a directory at the same time – it seems rm has special limits …
To solve the problem:
Use:
1 | find . -name 'pe-warn-*.bz2' | xargs rm |
or
1 | find . -name "pe-warn-*.bz2" -delete |