Commands by dakira

Commands by dakira (5)

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Download all files from podcast RSS feed

Neither of the others worked for me. This does.
This is sample output - yours may be different.
1

curl http://url/rss | grep -o '<enclosure url="[^"]*' | grep -o '[^"]*$' | xargs wget -c

dakira · 2016-05-29 12:07:21 9
Show UDID of iPhone

Display the serial of the iPhone (aka UDID). Show Sample Output
This is sample output - yours may be different.
```
<40  HEX-chars>
```
3

lsusb -s :`lsusb | grep iPhone | cut -d ' ' -f 4 | sed 's/://'` -v | grep iSerial | awk '{print $3}'

dakira · 2011-11-03 20:39:43 7
Remove old kernels and header data in Ubuntu/Debian

Removes all kernels and corresponding packages except of the one you're currently using.
This is sample output - yours may be different.
0

sudo apt-get -y purge $(dpkg --get-selections | awk '((/^linux-/) && (/[0-9]\./) && (!/'"`uname -r | sed "s/-generic//g"`"'/)) {print $1}')

dakira · 2011-08-04 14:02:02 1
Find all files <10MB and sum up their size

files
This is sample output - yours may be different.
0

i=0; for f in $(find ./ -size -10M -exec stat -c %s {} \; ); do i=$(($i + $f)); done; echo $i

dakira · 2010-01-08 15:47:35 0
convert uppercase files to lowercase files
This is sample output - yours may be different.
20

rename 'y/A-Z/a-z/' *

dakira · 2009-02-22 20:42:10 8

What's this?

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Selecting a random file/folder of a folder

Also looks in subfolders

Kill all processes that don't belong to root/force logoff

explanation: grep -- displays process ids -v -- negates the matching, displays all but what is specified in the other options -u -- specifies the user to display, or in this case negate The process loops through all PIDs that are found by pgrep, then orders a forced kill to the processes in numerical order, effectively killing the parent processes first including the shells in use which will force the users to logout. Tested on Slackware Linux 12.2 and Slackware-current

Create a transition between two videos

We take the first 50 frames of a.mp4 for track a, and 24 blank frames followed by b.mp4 for track b. We then create a transition from track a to track b starting from frame 25 and ending at frame 49. The output is stored in out.mp4 To view the results without saving remove "-consumer avformat:out.mp4" from the end. Documentation of the mlt framework and the melt command can be found here: http://www.mltframework.org/bin/view/MLT/Documentation

Install pip with Proxy

Installs pip packages defining a proxy

List all information about all files (in current dir)

This is a funny usage of the traditional command ls. It could be basically simplified as: $ ls -a -l Duplicating arguments is permitted: $ ls -a -l -l And this markup could be shortened as: $ ls -al Extra note: To view filesizes like a pro, pray for your God: $ ls -allah

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Numeric zero padding file rename

rename file name with fixed length nomeric format pattern

Skip to next selection in playlist

Uses process signal to play next selection

Are the two lines anagrams?

This works by reading in two lines of input, turning each into a list of one-character matches that are sorted and compared.

Makes the permissions of file2 the same as file1

Also works with: $chgrp --reference file1 file2 $chown --reference file1 file2

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