Commands by Erikarsons (0)

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copy root to new device
Clone a root partition. The reason for double-mounting the root device is to avoid any filesystem overlay issues. This is particularly important for /dev. Also, note the importance of the trailing slashes on the paths when using rsync (search the man page for "slash" for more details). rsync and bash add several subtle nuances to path handling; using trailing slashes will effectively mean "clone this directory", even when run multiple times. For example: run once to get an initial copy, and then run again in single user mode just before rebooting into the new disk. Using file globs (which miss dot-files) or leaving off the trailing slash with rsync (which will create /mnt/target/root) are traps that are easy to fall into.

list block devices
Shows all block devices in a tree with descruptions of what they are.

Nicely display mem usage with ps
Nicely display mem usage with ps.

Show crontabs for all users
added echo "### Crontabs for $user ####"; to make clear whose crontab is listed.

Using commandoutput as a file descriptor
Description is moved to "Sample output" because the html sanitizer for commandlinefu breaks the examples..

Show the key code for keyboard events include the Fn keys
The keycodes are a result of pressing: Mute (Fn+F1) a

list files recursively by size

list block devices
Shows all block devices in a tree with descruptions of what they are.

Detach a process from the current shell
ignore HUP interruptions

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.


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