Commands by copremesis (11)

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Rename files in batch

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.

create dir tree
create tree of dir's in one command

find the longest command in your history

Top 15 processes with the largest number of open files
See the summary.

Remove orphaned dependencies on Arch
-Qdt Lists dependencies/packages which are no longer required by any packages -q Output only package name (not the version number) -R Remove package(s) Rest is self-explanatory. I just started out with Arch - so if there is any better/standard method to achieve the same - please suggest.

Reuse all parameter of the previous command line
!* is all of the arguments to the previous command rather than just the last one. This is useful in many situations. Here's a simple example: $ vi cd /stuff oops! [exit vi, twice] $ !* expands to: cd /stuff

Get the total length of all video / audio in the current dir (and below) in H:m:s
change the *.avi to whatever you want to match, you can remove it altogether if you want to check all files.

Debug redirects between production reloads
Watches the headers of a curl, following any redirects and printing only the HTTP status and the location of the possible redirects.

Create an SSH tunnel for accessing your remote MySQL database with a local port


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