Commands by malathion (21)

  • Transpose parameter: 0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical Flip


    -1
    ffmpeg -i in.mov -vf "transpose=1" out.mov
    malathion · 2019-09-02 04:54:31 0

  • 1
    convmv --lower --notest FILE
    malathion · 2019-08-20 05:28:08 0

  • 2
    sysctl machdep.xcpm.cpu_thermal_level
    malathion · 2019-08-19 21:15:07 0
  • pudb is an ncurses debugger. This command will allow interactive debugging of test failures in pytest using pudb.


    0
    pytest --pdbcls pudb.debugger:Debugger --pdb --capture=no
    malathion · 2019-07-14 02:54:59 0
  • 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


    3
    diff <(jq . -M -S < old.json) <(jq . -M -S < new.json)
    malathion · 2018-10-11 20:59:48 0
  • 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


    1
    jq < file.json
    malathion · 2018-10-03 18:46:46 0

  • 0
    obase=16; echo "$(date +%s)" | bc | xxd -r -p | base32
    malathion · 2017-06-26 16:58:38 6

  • 1
    echo "http://commandlinefu.com" | curl -F-=\<- qrenco.de
    malathion · 2017-06-22 22:27:16 0
  • Replace 'csv_file.csv' with your filename.


    3
    python -c "import csv,json;print json.dumps(list(csv.reader(open('csv_file.csv'))))"
    malathion · 2017-05-17 19:35:53 1
  • Replaces the first instance of 'foo' with 'bar'. To replace all instances of 'foo' with 'bar': !!:gs/foo/bar/


    4
    !!:s/foo/bar/
    malathion · 2016-07-25 18:52:42 0
  • 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


    11
    rsync -a --delete empty-dir/ target-dir/
    malathion · 2016-06-07 16:56:55 1
  • 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


    3
    x="() { :; }; echo x" bash -c :
    malathion · 2014-12-08 22:21:18 0
  • echo "Hello world!" | sprunge # Redirect a stream to a pastebin sprunge ~/.bashrc # Send a file to a pastebin


    2
    sprunge() { curl -F 'sprunge=<-' http://sprunge.us < "${1:-/dev/stdin}"; }
    malathion · 2014-08-26 17:47:31 1
  • Without the bashisms and unnecessary sed dependency. Substitutions quoted so that filenames with whitespace will be handled correctly.


    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 0
  • 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.


    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 1
  • 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


    0
    psql -X -A -t -c "SELECT version();"
    malathion · 2014-05-01 18:10:20 0
  • 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


    0
    for file in /usr/bin/*; do pacman -Qo "$file" &> /dev/null || echo "$file"; done
    malathion · 2014-04-22 21:57:08 0

  • 2
    nvidia-settings -q gpucoretemp -t | awk '{s+=$1}END{print s/NR}' RS=" "
    malathion · 2014-01-16 17:24:09 0
  • 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


    1
    turl(){ curl --socks5-hostname localhost:9050 [email protected] ; }
    malathion · 2013-07-12 17:09:16 1
  • Many users have a personal ~/bin folder for user scripts and other miscellaneous applications they can't or don't want to add to /usr/bin. But this folder can get large and unwieldy. The above command adds ~/bin and all its subdirectories to the PATH environment variable so the scripts can be organized without changing .bashrc.


    -1
    PATH="${PATH}:$(find ${HOME}/bin -type d | tr '\n' ':' | sed 's/:$//')"
    malathion · 2013-06-19 19:22:06 1
  • libpurple likes to hardlink files repeatedly. To ignore libpurple, use sed: | sed '/\.\/\.purple/d' Show Sample Output


    1
    find . -type f -a \! -links 1
    malathion · 2013-05-06 20:44:08 1

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How many Linux and Windows devices are on your network?
Shows how many Windows and Linux devices are on your network. May add support for others, but that's all that are on my network right now.

Retry the previous command until it exits successfully
Executes the previously-run command constantly until it returns 0 (success). Put a

Convert a date to timestamp
Simple way to get a timestamp from a date

Save your open windows to a file so they can be opened after you restart
This will save your open windows to a file (~/.windows). To start those applications: $ cat ~/.windows | while read line; do $line &; done Should work on any EWMH/NetWM compatible X Window Manager. If you use DWM or another Window Manager not using EWMH or NetWM try this: $ xwininfo -root -children | grep '^ ' | grep -v children | grep -v '' | sed -n 's/^ *\(0x[0-9a-f]*\) .*/\1/p' | uniq | while read line; do xprop -id $line _NET_WM_PID | sed -n 's/.* = \([0-9]*\)$/\1/p'; done | uniq -u | grep -v '^$' | while read line; do ps -o cmd= $line; done > ~/.windows

combine `mkdir foo && cd foo` into a single function `mcd foo`
I find that I create a directory and then cd into that directory quite often. I found this little function on the internets somewhere and thought I'd share it. Just copy-paste it into you ~/.bash_profile and then `source ~/.bash_profile`.

Create a single-use TCP proxy with copy to stdout
USAGE: gate listening_port host port Creates listening socket and connects to remote device at host:port. It uses pipes for connection between two sockets. Traffic which goes through pipes is wrote to stdout. I use it for debug network scripts.

Using Git, stage all manually deleted files.

Find passwords that has been stored as plain text in NetworkManager

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.


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