commandlinefu.com is the place to record those command-line gems that you return to again and again.
You can sign-in using OpenID credentials, or register a traditional username and password.
Subscribe to the feed for:
Necessary for fsck for example.
The remount functionality follows the standard way how the mount command works with options from fstab. It means the mount command doesn't read fstab (or mtab) only when a device and dir are fully specified. After this call all old mount options are replaced and arbitrary stuff from fstab is ignored, except the loop= option which is internally generated and maintained by the mount command.
It does not change device or mount point.
The above command assumes the lost data is on /dev/sda and you previously issued the following command to mount _another_ disk or partition (/dev/sdb1) on /recovery
sudo mount /dev/sdb1 /recovery
If you don't do this, the data could be overwrited!
foremost is a very powerful carving tool. By default foremost recovers all known file types. If you want to reduce the amount of files that are recovered you can specify the file type you are looking for. Read the man page to know the available file types.
i.e to recover JPEG pictures append to foremost the switch -tjpg
aliases on each line.
recode ..HTML <file.txt >file.html
txt to Base64:
recode ../b64 <file.txt >file.b64
and so on.
Contrary to logic, typing calendar won't show a calendar, that's the job of cal.
Typing calendar will show some trivia related to the current date.
Tested against many Linux distros and FreeBSD.
An easter-egg from emacs.
The loop is to compare cookies. You can remove it...
Maybe you wanna use curl...
curl www.commandlinefu.com/index.php -s0 -I | grep "Set-Cookie"
Prerequisites: module Pod::Webserver installed. You can install it typing:
sudo perl -MCPAN -e 'install Pod::Webserver'
You can replace elinks with your fav browser. For FF:
podwebserver& sleep 2; firefox -remote 'openurl( http://127.0.0.1:8020/, new-tab )'
If you have Firefox open, this will pop-up the index web in a new tab.
I must monitorize a couple of ftp servers every morning WITHOUT a port-scanner
Instead of ftp'ing on 100 ftp servers manually to test their status I use this loop.
It might be adaptable to other services, however it may require a 'logout' string instead of 'quit'.
The file ftps.txt contains the full list of ftp servers to monitorize.
Traditionally we rewind a tape using this syntaxis:
mt -f /dev/rmt/0cbn rewind
Redirecting the dispositive to nothing as shown above is faster. Less typing is always better.