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Just an other solution :)
My first command :) I made this command to log public addresses of a virtual interface who connects random VPN servers around the world.
for f in input/*; do BN=$(basename "$f"); ffmpeg -i "$f" -vn "temp/$BN.flac"; sox "temp/$BN.flac" "temp/$BN-cleaned.flac" noisered profile 0.3; ffmpeg -i "$f" -vcodec copy -an "temp/$BN-na.mp4"; ffmpeg -i "temp/$BN-na.mp4" -i "temp/$BN-cleaned.flac" "output/$BN"; done
This was over the 255 character limit and I didn't feel like deliberately obfuscating it.
1. Create 'input', 'output' and 'temp' directories.
2. Place the files that you want to remove the hiss/static/general noise from in the input directory.
3. Generate a noise reduction profile with sox using 'sox an_input_file.mp4 -n trim x y noiseprof profile', where x and y indicates a range in seconds that only the sound you want to eliminate is present in.
4. Run the command.
calls grep on all non-binary files returned by find on its current working directory
This example code is intended to be used as a root permissions check in a script. It makes use of the $EUID (effective user ID) environment variable which is fully su- and sudo-safe.
set CDIR for it to work right..
Tar - Compress by excluding folders
get-ipsw device-name generation-string firmware-version
get-ipsw iPod 2,1 4.0
Different generation strings:
iPhone 3G: iPhone 1,2
iPhone 3GS: iPhone 2,1
iPod touch 2G: iPod 2,1
iPod touch 3G: iPod 3,1
This can be used with idevicerestore (I haven't tried it though).
Some shell newbies don't know this very handy file management related command so I decided to include it here.
You need to have the "file" package installed.
Saves opening another console terminal (eg. CTRL+ALT+F[n]) or opening another remote terminal.
Ctrl+Z pauses the current task and pushed it to the background, leaving you with a command prompt for those "Oh crap I forgot to change xyz before I ran that and it'll take forever if I Ctrl+C and start again..." situations. Typing 'fg' (shorthand for foreground, that's how I remember it) will resume the paused task.
Bash scrip to test if a server is up, you can use this before wget'ing a file to make sure a blank one isn't downloaded.
I wanted to play a song from the shell and get the shell back, I also dont want to store the file if it is not needed.
edit, not sure if I need to mention it... killall vlc to stop it
compare to alternative :
- directly tests the -STOP of the process to continue or stop loop,
- background operator should be set (or not) at the call of the function
For extension i suggest a slowPID() based on kill like above and a slowCMD based on killall.
On my music directory, I create variable that contains all mp3s files, then I play them with mpg123. -C options enable terminal control key, s for stop, p for pause, f for forward to next song.