Commands by tlemerond

Commands by tlemerond (1)

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Execute a command with a timeout

A timeout is great, but what if the command is taking longer than expected because it's hung up or ran into some other problem? That's where the -k option comes in. Run "some_command" and timeout after 30s. If the command is still running after 1 minute, it will receive a kill signal.
This is sample output - yours may be different.
2

timeout -k 1m 30s some_command

tlemerond · 2012-03-27 18:06:18 0

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Live filter a log file using grep and show x# of lines above and below

Convert embedded spaces in filenames to "_" (underscore)

This command converts filenames with embedded spaces in the current directory replacing spaces with the underscore ("_") character.

Force an fsck on reboot

Force an fsck on reboot. Useful on a system where / has mounted read-only because of file system issues.

Job Control

background and disown, but with a proper one-line syntax

get a directory from one machine to another using tar and ssh

Watch the disk fill up

While copying a large file that may take up a good chunk of your hard drive, start the copy and run this command concurrently. It will print out the disk information every second. It's pretty handy when you have a large copy with nothing to monitor the progress.

get you public ip address

Relies on ifconfig.me functioning. It's about as easy as it gets, and memorable to old geeks too.

Extract all 7zip files in current directory taking filename spaces into account

Generate a random left-hand password

Generates a random 8-character password that can be typed using only the left hand on a QWERTY keyboard. Useful to avoid taking your hand off of the mouse, especially if your username is left-handed. Change the 8 to your length of choice, add or remove characters from the list based on your preferences or kezboard layout, etc.

Remove specific entries from iptables

Then you can remove the specific entry: iptables -D INPUT 10 Just make sure these are set: IPTABLES_SAVE_ON_STOP="yes" IPTABLES_SAVE_ON_RESTART="yes" Else your changes won't stick when you restart iptables.

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