Commands by crazedsanity (4)

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The Chromium OS rootfs is mounted read-only. In developer mode you can disable the rootfs verification, enabling it to be modified.

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.

Most Commonly Used Grep Options
This is very helpful to place in a shell startup file and will make grep use those options all the time. This example is nice as it won't show those warning messages, skips devices like fifos and pipes, and ignores case by default.

Join lines
awk version of 7210. Slightly longer, but expanding it to catch blank lines is easier: $ awk 'BEGIN{RS="\0"}{gsub(/\n+/,"");print}' file.txt

Symlink all files from a base directory to a target directory
Symlinks all files in the base directory to the target directory then lists all of the created symlinks.

Watch the progress of 'dd'
This version was mentioned in the comments. Credits go to flatcap.

Short Information about loaded kernel modules
Liked command 4077 so I improved it, by doing all text manipulation with sed. "Run this as root, it will be helpful to quickly get information about the loaded kernel modules." THX mohan43u

Super Speedy Hexadecimal or Octal Calculations and Conversions to Decimal.
^Hexadecimal Ten minus Octal Ten is Eight(in Decimal). $ echo "$(( 0xaf )) = $(( 0257 ))" ^Hexadecimal AF and Octal 257 are both Decimal 175.

Colorize matching string without skipping others
this is useful to highlight only some code without losing other lines (eg. software, logs, scripts)


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