Run the last command as root

This one might be my most commonly used "one liner". I even wrote a post about it in my blog ;)

Doesn't this only work under ZSH ?

doesnt seem to work under bash/centos4?

work on Ubuntu 8.04

works on fedora with bash!

I almost never use sudo. It promotes bad security: using the same password for root and and for regular users.

This command owns all.

works in bash/Debian !!

I love you.

Befor I'v been so pissed off after typing long stings of command, and then have forgotten sudo. Therefor having to go all the way to the beginning of the command and enter sudo.

Love it

@meeko "All the way to the beginning"? Just hit the HOME key. Life is short! :-)

sudo is great for sandwich making also:

http://www.xkcd.com/149/

lots of the machines we use don't do home key - they do ~ instead - go figure.

this could be very usefull. Thanks.

I use !$ a lot. repeats the last word in the previous command

e.g.

ping

nslookup !$

will translate to

nslookup

obviously the first ! grabs the previous line, and the second character does somnething else - ! grabs the first word, $ grabs the last word.

anyone know any other variants or where to look up the man page - er... is it regexp or part of sh or perl or what??? ('scuse my ignorance - the unix needs a reverse lookup database)

Regarding using the "home" key to get to the beginning of a command.. I just wanted to note, that you can almost always use "Ctrl-A" to jump to the beginning of the line in Bash and many other programs. I think it's part of libreadline? Also, if you're using Bash in a Screen session, use Ctrl-A twice to jump to the beginning of a line.

The HOME key is a single key press.

Why chose a two key sequence instead of one?

I love this because it always feels like I'm yelling at my computer.

I vote this down, because 'sudo' is not meant to be used in this way. Totally bad security practice! Even if you are the only user in your computer, you are advised to put only those commands that are safe and commonly used in the sudoers file. Otherwise, you are probably going to learn it in a hard way.

And I vote it up, because this -is- how sudo is intended to be used in many modern systems such as Ubuntu and OS X.

I use Ctrl+p, Ctrl+a, sudo before.

OK, this inspired me to patch xkcd-149 :)

http://www.vanginderachter.be/2009/patched-xkcd-149-make-me-a-sandwich/

This is great!

Should work under bash, but you may have it disabled (set -H or set -o histexpand to reenable)

nice

I wrote an article about this and other popular one-liners. See it here:

http://www.catonmat.net/blog/top-ten-one-liners-from-commandlinefu-explained/

pretty good

Explained the next 10 top one-liners:

http://www.catonmat.net/blog/the-next-ten-one-liners-from-commandlinefu-explained/

Worky fine, OS X Snow Leopard 10.6.3.

before I found `sudo !!` I used to do the following:

1) arrow up (to get the last command from history)

2) Ctrl+A (to put the cursor at the front of the command)

3) type "sudo " and hit enter

WTF ? This is the best command for everyone ?

Damn ubuntu lamers...

Don't listen to the "Sudo promotes bad security" types. You know what promotes worse security? Actually operating as root.

awesome

@jemptymethod me too

Works in OS X Mountain Lion 10.8.1

this command trick and many like it are part of the history command.

try

man history

for more variants

if your shell does not have history it wont work

this command trick and many like it are part of the history command.

try

man history

for more variants

if your shell does not have history it wont work