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Commands by rodolfoap from sorted by
Terminal - Commands by rodolfoap - 16 results
phase() { while :; do for n in E4 F#4 B4 C#5 D5 F#4 E4 C#5 B4 F#4 D5 C#5; do /usr/bin/play -qn synth $1 pluck $n; done; echo -n "[$1]"; done; }; phase 0.13 & phase 0.131 &
2017-06-14 20:29:26
User: rodolfoap
Functions: echo
0

The Piano Phase piece, by Steve Reich is a minimalist composition which is played on two pianos played at slightly different tempos, a task that's very difficult to accomplish by human players. The auditive effects produced by the cell displacement produce beautiful patterns. See https://en.wikipedia.org/wiki/Piano_Phase . My rendered version: https://ydor.org/SteveReich/piano_phase.mp3

Requires sox to be installed on the system.

There are multiple videos on youtube showing different approaches and experiences to this interpretation. There is also a synthesized version.

Even if Bash can behave as a powerful pianist, a simple threaded version leaves full room to several time glitches and even negative displacements, the same issues that human pianists experience when playing the piece. The older the computer, the better the chaos added to the result due to the CPU load. Apparently that's the reason Steve Reich composes pieces such as this.

Without further ado, please give a warm welcome to the Bash minimalist player on synthesized two-threaded pianos. Please turn off your cellphones.

scrypt(){ [ -n "$1" ]&&{ echo '. <(echo "$(tail -n+2 $0|base64 -d|mcrypt -dq)"); exit;'>$1.scrypt;cat $1|mcrypt|base64 >>$1.scrypt;chmod +x $1.scrypt;};}
2017-06-14 16:27:20
User: rodolfoap
Functions: cat chmod echo
2

This function will encrypt a bash script and will only execute it after providing the passphrase. Requires mcrypt to be installed on the system.

cat hello

#!/bin/bash

case "$1" in

""|-h) echo "This is the fantastic Hello World. Try this:" $(basename $0) "[entity]" ;;

moon) echo Good night. ;;

sun) echo Good morning. ;;

world) echo "Hello, world!" ;;

*) echo Hi, [email protected] ;;

esac

scrypt hello

Enter the passphrase (maximum of 512 characters)

Please use a combination of upper and lower case letters and numbers.

Enter passphrase:

Enter passphrase:

Stdin was encrypted.

cat hello.scrypt

. <(echo "$(/usr/bin/tail -n+2 $0|base64 -d|mcrypt -dq)");exit;

AG0DQHJpam5kYWVsLTEyOAAgAGNiYwBtY3J5cHQtc2hhMQAV34412aaE8sRzQPQzi09YaNQPedBz

aGExAARvB6A/HYValW4txoCFmrlp57lmvhKBbM4p+OUiZcCxr6Y+Mm7ogg3Y14pHi0CrfT70Tubq

9g8/kNJrQr7W/ogHpVuOOdD0YfuRatrV7W2+OlNQ63KX780g4qTHrTqNnyLp8sF5RQ7GwxyZ0Oti

kROtVIU4g4+QAtn/k/e7h7yt4404VF1zzCYRSw20wmJz1o/Z0XO7E/DFBr5Bau7bWjnF7CRVtims

HGrDwv1miTtAcyB9PknymDxhSyjDUdNhqXGBIioUgqjX1CKgedtO0hQp050MiQd3I6HacpSrVUIW

kuuS+BtMrxHDy+48Mh1hidV5JQFP7LP5k+yAVLpeHd2m2eIT1rjVE/Bp2cQVkpODzXcWQDUAswUd

vulvj/kWDQ==

./hello

This is the fantastic Hello World. Try this: hello [entity]

./hello.scrypt

Enter passphrase:

This is the fantastic Hello World. Try this: hello.scrypt [entity]

./hello world

Hello, world!

./hello.scrypt world

Enter passphrase:

Hello, world!

cat dictionary.txt|while read a; do echo $a|cryptsetup luksOpen /dev/sda5 sda5 $a && echo KEY FOUND: $a; done
2014-04-16 18:49:53
User: rodolfoap
Functions: cat echo read
0

Lost your luks passphrase? You can always bruteforce from the command line. See the sample output, a simple command using a dictionary.

for a in {p,P}{a,A,4}{s,S,5}{s,S,5}; do echo $a|cryptsetup luksOpen /dev/sda5 $a && echo KEY FOUND: $a; done
2014-04-16 18:41:50
User: rodolfoap
Functions: echo
1

Lost your luks passphrase? You can always bruteforce from the command line. See the sample output, a simple command for the "pass" word, using combinations of upper/lowercase or number replacement. The generated combinations are:

for a in {p,P}{a,A,4}{s,S,5}{s,S,5}; do echo $a; done

pass

pasS

pas5

paSs

paSS

paS5

...

VAR=$(head -5)
2014-04-05 13:45:18
User: rodolfoap
Functions: head
Tags: read stdin head,
-2

Reads n lines from stdin and puts the contents in a variable. Yes, I know the read command and its options, but find this logical even for one line.

read -p 'Script: ' S && C=$S.crypt H='eval "$((dd if=$0 bs=1 skip=//|gpg -d)2>/dev/null)"; exit;' && gpg -c<$S|cat >$C <(echo $H|sed s://:$(echo "$H"|wc -c):) - <(chmod +x $C)
2013-03-10 08:59:45
User: rodolfoap
Functions: cat chmod echo gpg read sed wc
6

(Please see sample output for usage)

Use any script name (the read command gets it) and it will be encrypted with the extension .crypt, i.e.:

myscript --> myscript.crypt

You can execute myscript.crypt only if you know the password. If you die, your script dies with you.

If you modify the startup line, be careful with the offset calculation of the crypted block (the XX string).

Not difficult to make script editable (an offset-dd piped to a gpg -d piped to a vim - piped to a gpg -c directed to script.new ), but not enough space to do it on a one liner.

Sorry for the chmod on parentheses, I dont like "-" at the end.

Thanks flatcap for the subshell abbreviation to /dev/null

echo "eval \"\$(dd if=\$0 bs=1 skip=XX 2>/dev/null|gpg -d 2>/dev/null)\"; exit" > script.secure; sed -i s:XX:$(stat -c%s script.secure): script.secure; gpg -c < script.bash >> script.secure; chmod +x script.secure
2013-03-09 11:16:48
User: rodolfoap
Functions: chmod echo gpg sed stat
5

(Please see sample output for usage)

script.bash is your script, which will be crypted to script.secure

script.bash --> script.secure

You can execute script.secure only if you know the password. If you die, your script dies with you.

If you modify the startup line, be careful with the offset calculation of the crypted block (the XX string).

Not difficult to make script editable (an offset-dd piped to a gpg -d piped to a vim - piped to a gpg -c directed to script.new ), but not enough space to do it on a one liner.

dd if=/dev/zero of=T bs=1024 count=10240;mkfs.ext3 -q T;E=$(echo 'read O;mount -o loop,offset=$O F /mnt;'|base64|tr -d '\n');echo "E=\$(echo $E|base64 -d);eval \$E;exit;">F;cat <(dd if=/dev/zero bs=$(echo 9191-$(stat -c%s F)|bc) count=1) <(cat T;rm T)>>F
2013-01-31 01:38:30
User: rodolfoap
6

This is just a proof of concept: A FILE WHICH CAN AUTOMOUNT ITSELF through a SIMPLY ENCODED script. It takes advantage of the OFFSET option of mount, and uses it as a password (see that 9191? just change it to something similar, around 9k). It works fine, mounts, gets modified, updated, and can be moved by just copying it.

USAGE: SEE SAMPLE OUTPUT

The file is composed of three parts:

a) The legible script (about 242 bytes)

b) A random text fill to reach the OFFSET size (equals PASSWORD minus 242)

c) The actual filesystem

Logically, (a)+(b) = PASSWORD, that means OFFSET, and mount uses that option.

PLEASE NOTE: THIS IS NOT AN ENCRYPTED FILESYSTEM. To improve it, it can be mounted with a better encryption script and used with encfs or cryptfs. The idea was just to test the concept... with one line :)

It applies the original idea of http://www.commandlinefu.com/commands/view/7382/command-for-john-cons for encrypting the file.

The embedded bash script can be grown, of course, and the offset recalculation goes fine. I have my own version with bash --init-file to startup a bashrc with a well-defined environment, aliases, variables.

alias Z=base64&&Z=dG91Y2ggUExFQVNFX1NUT1BfQU5OT1lJTkdfQ09NTUFORExJTkVGVV9VU0VSUwo=&&$(echo $Z|Z -d)
2010-12-24 14:29:19
User: rodolfoap
Functions: alias echo
Tags: touch base64
7

Would create a file with a meaningful title. Dedicated to John Cons, who is annoying us users. Merry Christmas!!!

curl -s http://boards.4chan.org/wg/|sed -r 's/.*href="([^"]*).*/\1\n/g'|grep images|xargs wget
2010-12-12 06:32:19
User: rodolfoap
Functions: grep sed xargs
0

Im' not interested in images, but that's how I would do it.

(for FILE in [email protected]; do echo $[100*++x/$#]; command-for-each-parameter; done)|zenity --progress --auto-close
2010-10-05 10:07:04
User: rodolfoap
Functions: echo
0

Shows a zenity progressbar for each file in a script, see the samble output. Works with any number, less, equal or greater than 100.

x is not initially defined. If used twice in the script, set it:

x=0

(for FILE in [email protected]; do echo $[100*++x/$#]; command... "$FILE"; done)|zenity --progress --auto-close

pdftk in.pdf burst
2010-02-10 13:31:36
User: rodolfoap
Tags: pdftk
8

Simple alternative to the previous submitted one

printf "%50s\n"|tr ' ' -
2010-01-07 08:49:46
User: rodolfoap
Functions: printf tr
-2

Better -and faster- using bash printf.

A=1;B=100;X=0;C=0;N=$[$RANDOM%$B+1];until [ $X -eq $N ];do read -p "N between $A and $B. Guess? " X;C=$(($C+1));A=$(($X<$N?$X:$A));B=$(($X>$N?$X:$B));done;echo "Took you $C tries, Einstein";
2009-12-16 13:24:23
User: rodolfoap
Functions: read
Tags: Game
13

Felt like I need to win the lottery, and wrote this command so I train and develop my guessing abilities.

mkdir myicons && find /usr/share/icons/ -type f | xargs cp -t myicons
2009-12-09 17:43:28
User: rodolfoap
Functions: cp find mkdir xargs
Tags: icons
2

Today I needed to choose an icon for an app. My simpler way: put all of /usr/share/icons in myicons folder and brows'em with nautilus. Then rm -r 'ed the entire dir.

find -mindepth 1 -maxdepth 1 -name .\*
2009-11-24 22:18:33
User: rodolfoap
Functions: find
1

find makes it easier, filtering . and ..

maxdepth could be removed, finding entries recursively. Removing mindepth causes . to appear