Commands by Jubal (2)

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Monitor a file with tail with timestamps added

Re-use the previous command output
The $(!!) will expand to the previous command output (by re-running the command), which becomes the parameter of the new command newcommand.

Gentoo: Get the size of all installed packets, sorted
On a Gentoo system, this command will tell you which packets you have installed and sort them by how much space they consume. Good for finding out space-hogs when tidying up disk space.

Download Youtube video with wget!
Nothing special required, just wget, sed & tr!

rename all images in folder with prefix of date and time from exif data
imagemagick is required

Get all documents (doc,docx,xls,xlsx,pdf,ppt,pptx,...) linked in a webpage

Count the number of deleted files
It does not work without the verbose mode (-v is important)

ping a host until it responds, then play a sound, then exit
After this, just type: $ beepwhenup You need to install "beep" before this would make the beep sound. Save it in your .profile if you want to use it later WARNING: this command won't exit until it is successful. You won't be able to CONTROL+C out of it.

Use tcpdump to monitor all DNS queries and responses

Install pip with Proxy
Installs pip packages defining a proxy


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