Commands using less (59)

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Mutt - Change mail sender.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Twitpic upload and Tweet

display date of last time a process was started in `date` format
STARTED Mon Oct 18 04:02:01 2010

Get full directory path of a script regardless of where it is run from
Also resolves symlinks, showing the full path of the link target

Print a row of characters across the terminal
Pure Bash This will print a row of characters the width of the screen without using any external executables. In some cases, COLUMNS may not be set. Here is an alternative that uses tput to generate a default if that's the case. And it still avoids using tr. $ printf -v row "%${COLUMNS:-$(tput cols)}s"; echo ${row// /#} The only disadvantage to either one is that they create a variable.

(Debian/Ubuntu) Discover what package a file belongs to
'dpkg -S' just matches the string you supply it, so just using 'ls' as an argument matches any file from any package that has 'ls' anywhere in the filename. So usually it's a good idea to use an absolute path. You can see in the second example that 12 thousand files that are known to dpkg match the bare string 'ls'.

Build an exhaustive list of maildir folders for mutt
Of course, you can adjust "Maildir" to your config...

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.

analyze traffic remotely over ssh w/ wireshark
commandline for mac os x


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