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 ;)

JackiesJungle · 815 weeks and 4 days ago

Doesn't this only work under ZSH ?

pyrho · 815 weeks and 3 days ago

doesnt seem to work under bash/centos4?

trix · 815 weeks and 3 days ago

work on Ubuntu 8.04

mrbyte · 815 weeks and 3 days ago

works on fedora with bash!

betsubetsu · 814 weeks and 5 days ago

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

grep · 814 weeks and 5 days ago

This command owns all. chmod 755 foo.bar operation not permitted sudo !! sudo chmod 755 foo.bar [sudo] password for waldo: (insert text of elation here)

farglenargle · 814 weeks and 1 day ago

works in bash/Debian !!

prayer · 813 weeks and 4 days ago

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 · 812 weeks ago

@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/

mpb · 811 weeks and 4 days ago

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)

bulwynkl · 811 weeks ago

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.

cmang · 810 weeks and 6 days ago

The HOME key is a single key press. Why chose a two key sequence instead of one?

mpb · 810 weeks and 4 days ago

I love this because it always feels like I'm yelling at my computer. do_something # i don't wanna... SUDO!! # ok, fine...

isaacs · 810 weeks ago

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.

jxy · 809 weeks and 6 days ago

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.

qubyte · 808 weeks and 2 days ago

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

kylexlau · 803 weeks and 1 day ago

OK, this inspired me to patch xkcd-149 :) http://www.vanginderachter.be/2009/patched-xkcd-149-make-me-a-sandwich/

svg · 799 weeks and 3 days ago

This is great!

marcop · 784 weeks and 1 day ago

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

unixmonkey6345 · 784 weeks and 1 day ago

nice

haven489 · 766 weeks and 5 days ago

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/

pkrumins · 759 weeks and 1 day ago

pretty good

deargodzw · 759 weeks and 1 day ago

Explained the next 10 top one-liners: http://www.catonmat.net/blog/the-next-ten-one-liners-from-commandlinefu-explained/

pkrumins · 758 weeks and 2 days ago

Worky fine, OS X Snow Leopard 10.6.3.

hced · 754 weeks and 2 days ago

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

jemptymethod · 729 weeks and 4 days ago

WTF ? This is the best command for everyone ? Damn ubuntu lamers...

gormux · 719 weeks and 1 day ago

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

Karunamon · 670 weeks and 3 days ago

awesome

jldbasa · 660 weeks and 4 days ago

@jemptymethod me too

dfang · 635 weeks and 4 days ago

Works in OS X Mountain Lion 10.8.1

delete · 630 weeks and 1 day ago

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

bulwynkl · 622 weeks and 5 days ago

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

bulwynkl · 622 weeks and 5 days ago

safer to type: /usr/bin/sudo !! For *any* command that will prompt for a password, it is more secure to type the full path (or pull it from shell history) because a common hack technique, if they can get access to your account, is to mess with your $PATH and plant a spoofed sudo which captures your typed password, prints an error message, and then execs the real sudo. The user thinks "Oh, I miss-typed the password. I'll type it again".

mpb · 505 weeks and 1 day ago

xkcd got it wrong (https://xkcd.com/149/) make me a sandwich what? make it yourself sudo!!

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yeoyeo · 203 weeks ago

Who doesn't use this at least once a day LOL

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