Commands using cd (215)

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Using numsum to sum a column of numbers.
if you, like me, do not have the numsum, this way can do the same.

Play all files in the directory using MPlayer
Skip forward and back using the < and > keys. Display the file title with I.

View internet connection activity in a browser
The output of lsof is piped to txt2html which converts it to html. # Perl module HTML::TextToHTML needed

Install pip with Proxy
Installs pip packages defining a proxy

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

Convert epoch date to human readable date format in a log file.

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

Report full partitions from a cron
Reports all local partitions having more than 90% usage. Just add it in a crontab and you'll get a mail when a disk is full. (sending mail to the root user must work for that)

grep tab chars
mixing tabs and spaces for indentation in python would confuse the python interpreter, to avoid that, check if the file has any tab based indentation. "^V" => denotes press control + v and press tab within quotes. $ cat improper_indent.py class Tux(object): print "Hello world.." $ grep " " improper_indent.py print "Hello world.."

Find usb device
I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him


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