Here are the most popular 10 commands from this site:
sudo !!
Run the last command as root!
it’s very useful,when you execute a command and it tells you that permission
denied or don’t have privilege.You can just type this to run again
as root.
python -m SimpleHTTPServerQuickly share current directory tree as HTTPServer,and other can access by type http://$HOSTNAME:8000/ in browser.Remember to replace the “$HOSTNAME”.
:w !sudo tee %
Save a file you edited in vim without the needed permissions!
When you forgot to edit a file with enough permission,you can still save
the changes by this command in Vim.
cd -change to the previous working directory
^foo^bar
Runs previous command but replacing
Really useful for when you have a typo in a previous command. Also,
arguments default to empty so if you accidentally run:
echo "no typozs"
you can correct it with
^z
cp filename{,.bak}
Quickly backup a file to filename.bak.And mv
filename{,.bak} quickly move a file to filename.bak.
mtr google.com
mtr combines the functionality of the traceroute and ping programs in a single.
!whatever:pCheck command history, but avoid running it
!whatever will search your command history and execute the first command
that matches ‘whatever’. If you don’t feel safe doing this put :p on
the end to print without executing. Recommended when running as
superuser.
ssh-copy-id user@hostCopy ssh keys to user@host to enable password-less ssh logins.
To generate the keys use the command ssh-keygen
ffmpeg -f x11grab -s wxga -r 25 -i :0.0 -sameq /tmp/out.mpg
Capture video of a linux desktop.
it doesn’t work in my ubuntu machine,and finally I found this:
ffmpeg -f x11grab -s sxga -r 24 -i :0.0 /tmp/out.mpg
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