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Generate password

Calculate N!
Same as the seq/bc solution but without bc.

Show log message including which files changed for a given commit in git.

Perl oneliner to print access rights in octal format
This prints file access rights in octal - useful when "stat" is unavailable.

check open ports without netstat or lsof

Download an entire ftp directory using wget
If the username includes an @ you can use this one: wget -r --user=username_here --password=pass_here ftp://ftp.example.com

Find the package that installed a command

Set laptop display brightness
Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

"at" command w/o the resource usage/competition issues
EXAMPLES jb "next sun 12pm" "/bin/sh ~you/1.sh" & jb "2010-08-29 12:00:00" "~you/1.sh" & jb "29aug2010 gmt" ". ~you/1.sh" & jb 12:00p.m. "nohup ./1.sh" & jb 1min "echo stop!" & SEE ALSO parsedate(3) strftime(3)

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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