Commands tagged capistrano (2)

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find out how many days since given date
You can also do this for seconds, minutes, hours, etc... Can't use dates before the epoch, though.

vi a new file with execution mode
$ vix /tmp/script.sh Open a file directly with execution permission. Put the function in your .bashrc You can also put this in your vimrc: $ command XX w | set ar | silent exe "!chmod +x %" | redraw! and open a new file like this: $ vi +XX /tmp/script.sh

Benchmark SQL Query
Benchmark a SQL query against MySQL Server. The example runs the query 10 times, and you get the average runtime in the output. To ensure that the query does not get cached, use `RESET QUERY CACHE;` on top in the query file.

list block devices
Shows all block devices in a tree with descruptions of what they are.

GRUB2: set Super Mario as startup tune

Test load balancers
With the "--resolve" switch, you can avoid doing DNS lookups or edit the /etc/hosts file, by providing the IP address for a domain directly. Useful if you have many servers with different IP addresses behind a load balancer. Of course, you would loop it: $ for IP in 10.11.0.{1..10}; do curl --resolve subdomain.example.com:80:$IP subdomain.example.com -I -s; done

Set a posix shell to echo all commands that it's about to execute, after all expansions have been done.
the 'set -x' mode can be exited by typing $ set +x

Installing True-Type fonts
First you have to create a directory in your system, where the fonts will be stored, and copy them. $ sudo mkdir /usr/share/fonts/miscttf; sudo cp *.ttf /usr/share/fonts/miscttf After recharge cache with the command

Get a list of the top 10 heaviest tables in your mysql database - useful for performance diagnostics

Transfer a file to multiple hosts over ssh
You can push files to up to 32 servers at once assuming ssh keys are in place. Great tool, it is part of the pssh suite.


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