Commands by malathion

Commands by malathion (22)

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Get the beats per minute from an audio track

Requires bpm-tools https://www.pogo.org.uk/~mark/bpm-tools/ Show Sample Output
This is sample output - yours may be different.
```
119.900
```
1

ffmpeg -loglevel quiet -i "$AUDIO_FILE" -f f32le -ac 1 -ar 44100 - | bpm

malathion · 2023-09-16 18:55:16 72
Download Video & extract only a specific Time of it

Because this does not download more of the video than necessary, it is faster (especially with long videos).
This is sample output - yours may be different.
4

yt-dlp --external-downloader ffmpeg --external-downloader-args "-ss 00:05:00 -t 00:01:00" "https://www.youtube.com/watch?v=Y6DGABIcB3w"

malathion · 2023-09-16 18:04:12 70
Rotate a video file by 90 degrees CW

Transpose parameter: 0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical Flip
This is sample output - yours may be different.
-1

ffmpeg -i in.mov -vf "transpose=1" out.mov

malathion · 2019-09-02 04:54:31 87
Convert & rename all filenames to lower case
This is sample output - yours may be different.
1

convmv --lower --notest FILE

malathion · 2019-08-20 05:28:08 78
Get CPU thermal data on MacOS
This is sample output - yours may be different.
3

sysctl machdep.xcpm.cpu_thermal_level

malathion · 2019-08-19 21:15:07 59
Debug pytest failures in the terminal

pudb is an ncurses debugger. This command will allow interactive debugging of test failures in pytest using pudb.
This is sample output - yours may be different.
1

pytest --pdbcls pudb.debugger:Debugger --pdb --capture=no

malathion · 2019-07-14 02:54:59 42
Get a diff of two json arrays

jq is amazing for manipulating json on the commandline, but the developers have some weird ideas about how to handle shell redirections. This command works around them. Further reading: https://github.com/stedolan/jq/issues/1110
This is sample output - yours may be different.
3

diff <(jq . -M -S < old.json) <(jq . -M -S < new.json)

malathion · 2018-10-11 20:59:48 257
Use jq to validate and pretty-print json output

The `jq` tool can also be used do validate json files and pretty print output: ` jq < file.json` Available on several platforms, including newer debian-based systems via `#sudo apt install jq`, mac via `brew install jq`, and from source https://stedolan.github.io/jq/download/ This alternative to the original avoids the useless use of cat Show Sample Output
This is sample output - yours may be different.
```
success:
{
  "foo": "bar"
}

error:
$ jq < file.json
parse error: Unmatched '}' at line 1, column 15
```
1

jq < file.json

malathion · 2018-10-03 18:46:46 229
Get the current epoch in base32
This is sample output - yours may be different.
0

obase=16; echo "$(date +%s)" | bc | xxd -r -p | base32

malathion · 2017-06-26 16:58:38 22

echo "http://commandlinefu.com" | curl -F-=\<- qrenco.de

malathion · 2017-06-22 22:27:16 18

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.
This is sample output - yours may be different.
4

python -c "import csv,json;print json.dumps(list(csv.reader(open('csv_file.csv'))))"

malathion · 2017-05-17 19:35:53 22
Runs previous command but replacing

Replaces the first instance of 'foo' with 'bar'. To replace all instances of 'foo' with 'bar': !!:gs/foo/bar/
This is sample output - yours may be different.
5

!!:s/foo/bar/

malathion · 2016-07-25 18:52:42 15
Optimal way of deleting huge numbers of files

This command works by rsyncing the target directory (containing the files you want to delete) with an empty directory. The '--delete' switch instructs rsync to remove files that are not present in the source directory. Since there are no files there, all the files will be deleted. I'm not clear on why it's faster than 'find -delete', but it is. Benchmarks here: https://web.archive.org/web/20130929001850/http://linuxnote.net/jianingy/en/linux/a-fast-way-to-remove-huge-number-of-files.html
This is sample output - yours may be different.
11

rsync -a --delete empty-dir/ target-dir/

malathion · 2016-06-07 16:56:55 11
Check your bash shell for vulnerability to the ShellShock exploit

If this command prints 'x' then your shell is vulnerable. Null output confirms that you are protected. Further reading: http://allanmcrae.com/2014/09/shellshock-and-arch-linux/ Show Sample Output
This is sample output - yours may be different.
```
x
```
3

x="() { :; }; echo x" bash -c :

malathion · 2014-12-08 22:21:18 8
Send a file to a pastebin from STDIN or a file, with a single function

echo "Hello world!" | sprunge # Redirect a stream to a pastebin sprunge ~/.bashrc # Send a file to a pastebin
This is sample output - yours may be different.
2

sprunge() { curl -F 'sprunge=<-' http://sprunge.us < "${1:-/dev/stdin}"; }

malathion · 2014-08-26 17:47:31 15
Convert PDF to JPG

Without the bashisms and unnecessary sed dependency. Substitutions quoted so that filenames with whitespace will be handled correctly.
This is sample output - yours may be different.
4

for file in *.pdf; do convert -verbose -colorspace RGB -resize 800 -interlace none -density 300 -quality 80 "$file" "${file//.pdf/.jpg}"; done

malathion · 2014-06-19 15:52:42 7
Securely destroy data on given device hugely faster than /dev/urandom

This command generates a pseudo-random data stream using aes-256-ctr with a seed set by /dev/urandom. Redirect to a block device for secure data scrambling.
This is sample output - yours may be different.
4

openssl enc -aes-256-ctr -pass pass:"$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64)" -nosalt < /dev/zero > randomfile.bin

malathion · 2014-06-02 18:12:54 8
Get a PostgreSQL servers version

Without using a pipe. -X ignores the user's .psqlrc configuration file -A sets un-aligned table output mode -t prints rows only (no headers or footers) Show Sample Output
This is sample output - yours may be different.
```
PostgreSQL 9.3.4 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.8.2 20140206 (prerelease), 64-bit
```
0

psql -X -A -t -c "SELECT version();"

malathion · 2014-05-01 18:10:20 7
List files that are not owned by any installed package

In this example I am returning all the files in /usr/bin that weren't put there by pacman, so that they can be moved to /usr/local/bin where they (most likely) belong. Show Sample Output
This is sample output - yours may be different.
```
/usr/bin/archnews
/usr/bin/evhz
/usr/bin/pager
/usr/bin/pinentry-ncurses
/usr/bin/shortping
/usr/bin/showcolors
/usr/bin/xlock
```
0

for file in /usr/bin/*; do pacman -Qo "$file" &> /dev/null || echo "$file"; done

malathion · 2014-04-22 21:57:08 11
Print average GPU core temperature
This is sample output - yours may be different.
2

nvidia-settings -q gpucoretemp -t | awk '{s+=$1}END{print s/NR}' RS=" "

malathion · 2014-01-16 17:24:09 12

Use curl with a local SOCKS5 proxy (e.g. Tor)

Routes curl input through a local SOCKS5 proxy; in this case, anonymizes curl activity via The Onion Router (Tor) proxy running locally. Note that the traffic will be anonymized, but it will NOT be encrypted, so your traffic will be very vulnerable to man-in-the-middle attacks. Show Sample Output

turl(){ curl --socks5-hostname localhost:9050 $@ ; }

malathion · 2013-07-12 17:09:16 8

Print a list of all hardlinks in the working directory, recursively

libpurple likes to hardlink files repeatedly. To ignore libpurple, use sed: | sed '/\.\/\.purple/d' Show Sample Output
This is sample output - yours may be different.
```
./.bash_logout
./.bash_styles
./.dir_colors
./dotfiles/home/.bash_logout
./dotfiles/home/.bash_styles
./dotfiles/home/.dir_colors
./dotfiles/home/.gitignore_global
./dotfiles/home/.nvidia-settings-rc
./dotfiles/home/.taskrc
./dotfiles/showcolors
./.dropbox-dist/dropbox
./.dropbox-dist/library.zip
./.gitignore_global
./.nvidia-settings-rc
./.taskrc
```
1

find . -type f -a \! -links 1

malathion · 2013-05-06 20:44:08 11

What's this?

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Bash Dialog

The dialog utility is used to create a basic level graphical user interface. We can use this in Shell script to create very useful programs.

Extract shortcuts and hostnames from .ssh/config

Spits out table that shows your Host->HostName aliases in ~/.ssh/config

Detect illegal access to kernel space, potentially useful for Meltdown detection

Based on capsule8 agent examples, not rigorously tested

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"

Ruby - nslookup against a list of IP`s or FQDN`s

This version uses host and no ruby.

Delete a file/directory walking subdirectories (bash4 or zsh)

Blacklist usb storage

Some times you may ban usb to protect thefting of your personal data. Blacklist the usb_storage module by adding blacklist usb_storage to /etc/modprobe.d/blacklist.conf. To load the module manually, $sudo modprobe usb_storage.

FInd the 10 biggest files taking up disk space

This combines the above two command into one. Note that you can leave off the last two commands and simply run the command as "find /home/ -type f -exec du {} \; 2>/dev/null | sort -n | tail -n 10" The last two commands above just convert the output into human readable format.

Efficient remote forensic disk acquisition gpg-crypted for multiple recipients

Acquires a bit-by-bit data image, gzip-compresses it on multiple cores (pigz) and encrypts the data for multiple recipients (gpg -e -r). It finally sends it off to a remote machine.

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

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