Commands by paulochf

Commands by paulochf (4)

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Renaming files removing some unwanted extension

For those files in current folder that would be shown in `ls *ext`, for some extension ext, move/rename that file removing the .ext suffix from the file name. It uses Bash's parameter substitution, as seen in http://tldp.org/LDP/abs/html/parameter-substitution.html#PCTPATREF (for analog use in prefix, see http://tldp.org/LDP/abs/html/parameter-substitution.html#PSOREX2 )
This is sample output - yours may be different.
-3

for i in *ext; do mv $i ${i%.ext}; done

paulochf · 2011-11-13 03:58:08 9
Move mp3 files to another path with existing subtree structure

Use case: folder with flac files with tree structure ../artist/album/number-title.flac 1) convert flac->mp3 in the same folder: http://www.commandlinefu.com/commands/view/6341/convert-all-.flac-from-a-folder-subtree-in-192kb-mp3 2) search for mp3 files and recreate tree structure to another path: http://www.commandlinefu.com/commands/view/8853/copy-selected-folder-found-recursively-under-src-retaining-the-structure 3) move all mp3 files to that new folder: this command
This is sample output - yours may be different.
2

find . -iname "*.mp3" -type f -print0 | xargs -0 -I '{}' mv {} /new/path/to/mp3/{}

paulochf · 2011-07-18 05:28:32 4
copy selected folder found recursively under src retaining the structure

It's not better than the former, just another possible way. Found at http://www.linuxquestions.org/questions/linux-newbie-8/copy-directory-structure-only-208796/ Credits to whansard The command finds all .mp3 files in all subfolders from where it's ran, catches its "relative path" and creates inside /new/path/ with the same "relative path". PS: /new/path/ must exists Use case: folder with flac files with tree structure ../artist/album/number-title.flac 1) convert flac->mp3 in the same folder: http://www.commandlinefu.com/commands/view/6341/convert-all-.flac-from-a-folder-subtree-in-192kb-mp3 2) search for mp3 files and recreate tree structure to another path: this command 3) move all mp3 files to that new folder: http://www.commandlinefu.com/commands/view/8854/move-mp3-files-to-another-path-with-existing-subtree-structure Show Sample Output
This is sample output - yours may be different.
```
$ find . -type d -exec mkdir /home/myuser/new/{} \;
mkdir: cannot create directory `/home/myuser/new/.': File exists
```
-1

find . -type d -exec mkdir /new/path/{} \;

paulochf · 2011-07-18 05:17:39 4
Convert all .flac from a folder subtree in 192Kb mp3

find . -type f -iname '*.flac' # searches from the current folder recursively for .flac audio files | # the output (a .flac audio files with relative path from ./ ) is piped to while read FILE; do FILENAME="${FILE%.*}"; flac -cd "$FILE" | lame -b 192 - "${FILENAME}.mp3"; done # for each line on the list: # FILE gets the file with .flac extension and relative path # FILENAME gets FILE without the .flac extension # run flac for that FILE with output piped to lame conversion to mp3 using 192Kb bitrate Show Sample Output
This is sample output - yours may be different.
```
#For each audio file, it prints

audio.flac: done         
LAME 3.98.2 64bits (http://www.mp3dev.org/)
Using polyphase lowpass filter, transition band: 18671 Hz - 19205 Hz
Encoding <stdin>
      to ./path/with/folders/audio.mp3
Encoding as 44.1 kHz j-stereo MPEG-1 Layer III (7.3x) 192 kbps qval=3

flac 1.2.1, Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson
flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are
welcome to redistribute it under certain conditions.  Type `flac' for details.
```
8

find . -type f -iname '*.flac' | while read FILE; do FILENAME="${FILE%.*}"; flac -cd "$FILE" | lame -b 192 - "${FILENAME}.mp3"; done

paulochf · 2010-08-15 19:02:19 6

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run a command whenever a file is touched

This is useful if you'd like to see the output of a script while you edit it. Each time you save the file the command is executed. I thought for sure something like this already exists - and it probably does. I'm on an older system and tend to be missing some useful things. Examples: $ ontouchdo yourscript 'clear; yourscript somefiletoparse' Edit yourscript in a separate window and see new results each time you save. $ ontouchdo crufty.html 'clear; xmllint --noout crufty.html 2>&1 | head' Keep editing krufty.html until the xmllint window is empty. Note: Mac/bsd users should use stat -f%m. If you don't have stat, you can use perl -e '$f=shift; @s=stat($f); print "$s[9]\n";' $1

check open ports without netstat or lsof

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Installs pip packages defining a proxy

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This is great for looking for files that have been updated recently. Logs especially or monitoring what files were added during an install.

Google URL shortener

Shorter and made into a function.

list files recursively by size

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Very effective, use only DNS protocol. The @ part is optional if you already set opendns servers as default ns servers.

send a file or directory via ssh compressing with lzma for low trafic

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

Add sudo with shortcut alt+e in bash

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