All commands (14,232)
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Display a compact, columnized reference of printable ASCII characters and their shell-compatible octal escape sequences. Show Sample Output
1for i in {1..256};do printf '%3d %b\n' $i \\0$((i/64*100+i%64/8*10+i%8));done|cat -t|column -c$((${COLUMNS:-80}/2)) -
The xorshift32 PRNG written by George Marsaglia in Bash, code golfed. Bash already has the $RANDOM and $SRANDOM environment variables, so this isn't all that useful. The seed "s" must be non-zero. Show Sample Output
0n(){ s=$[s^s<<13];s=$[s^s>>17];s=$[s^s<<5];echo $[s&2**32-1]; } -
https://djmag.com/top100djs Show Sample Output
0elinks -dump https://djmag.com/top100djs | awk '/^[0-9]+$/ { rank=$0; next } rank && /^\[[0-9]+\]/ { gsub(/^\[[0-9]+\]/, ""); gsub(/^[ \t]+|[ \t]+$/, ""); print rank ". " $0; rank="" }'|sort -u -
A lightweight and dependency-minimal way to record a selected region of your Wayland screen. By using `slurp`'s custom formatting directly (`%wx%h+%x+%y`), we eliminate the need for piping through helper tools like `sed` or `awk` to construct the geometry argument for `gpu-screen-recorder`. Requirements: slurp, gpu-screen-recorder
1gpu-screen-recorder -w "$(slurp -f "%wx%h+%x+%y")" -f 60 -o "$HOME/rec_$(date +%Y%m%d_%H%M%S).mp4" -
Ignores deleted files since main. dos2unix already skips binary files. Safely NUL-delimited. Add -i for a dry run.
-1git diff --diff-filter=ACMRTUX --name-only main -z | grep -zvE '(.meta)' | xargs -0 dos2unix --add-eol -
Downloads BlackArch tool pages and prints only GitHub links using pure awk filtering.
0curl -sL blackarch.org/{tools,recon}.html | awk -F'"' '$4 ~ /^https:\/\/github\.com\// { print $4 }' -
1nmcli connection import type wireguard file wireguard_config.conf
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This is good when the other option on this site not includes ´tput´ like on minimal shell
3printf '%*s\n' "${COLUMNS:-80}" '' | tr ' ' "${1-_}" -
1kdeconnect-cli -d $(kdeconnect-cli -a --id-only) --share kdeconnect-cli-send-file.sh
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0cat /dev/urandom | play -q -t raw -r 8000 -e unsigned-integer -b 8 -c 1 -t alsa default
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0udevadm monitor --udev --subsystem-match=usb | gawk '/add/ { system("espeak \"USB device attached\"") }'
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1lsmod | awk 'NR>1 && $4!="-" {print $1; split($4,a,","); for(i in a) print " -> used by:", a[i]; print ""}'
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4awk 'NR==13' /etc/services
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-1awk '{sum += $0} END {print sum}' file
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5netstat -ntu | tail -n +3 | awk '{print $5}' | sed 's/:[0-9]*$//' | sort | uniq -c | sort -rn
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Do not use this in production! This is a true hardware random number generator using your system as the entropy source. It models flipping a coin by pitting a fast clock (the CPU) against a slow clock (the RTC). The CPU models the coin flipping head over tails during flight and the RTC models the duration of the coin's flight in the air. A timer is set 1 millisecond into the future and a bit is flipped as fast as possible before the timer expires. 256 bits are collected then hashed with SHA-256 to whiten the data and ensure uniformity. This makes some assumptions however. It assumes that your system is not compromised. It assumes your system is generating enough interrupts for the kernel scheduler to be unpredictable on what gets CPU priority. It assumes that your installed sha256sum(1) command is correctly implemented. Just because you can, doesn't mean you should. Use your system's RNG (EG, /dev/urandom) instead. Show Sample Output
1trng() { zmodload zsh/datetime; local flips=""; while ((${#flips}<256)); do local coin=0; local t=$((EPOCHREALTIME+0.001)); while (($EPOCHREALTIME<$t)); do ((coin^=1)); done; flips+=$coin; done; local h=($(print "$flips"|sha256sum)); -
Calculates the ceiling of the log2 of a given argument. Show Sample Output
1log2() { local n=0; for ((i=$1-1; i>0; i>>=1)); do ((n+=1)); done; echo $n; } -
Issues & improvements Race conditions: the check for writability then mv is not fully atomic — another process could create/remove/change the target between the test and mv. Permissions and ownership: mv will preserve contents but the resulting file may have the temp file's permissions/ownership (mktemp default). Signal safety: if interrupted (SIGINT, SIGTERM) the temp file may remain. Portability: uses bash-compatible constructs but relies on mktemp and -a (POSIX [ -a ] is obsolete; better to use -e). Better error messages and exit status handling. Allow optional mode to write to stdout when no filename given. Support setting desired file mode (umask or chmod) and preserve atomic replace semantics. Enhanced version Uses safer existence test ([ -e ] not deprecated -a). Installs traps to clean up temp file on exit/signals. Preserves mode of the existing file (if it exists) or allows a chmod option. Attempts a safer atomic replace: write to temp in same directory as target when a filename is supplied (reduces window for cross-filesystem mv failure and preserves atomicity). If no filename given, writes temp contents to stdout. Returns non-zero on failure and prints concise errors to stderr.
-5buffer(){ tty -s&&return; d=${1:-/tmp}; tmp=$(mktemp "$d/.b.XXXXXX")||return; trap 'rm -f "$tmp"' EXIT; cat>"$tmp"||{ rm -f "$tmp"; return 1; }; [ -z "$1" ]&&{ cat "$tmp"; rm -f "$tmp"; return 0; }; mv -f "$tmp" "$1"; } -
0adb shell input keyevent KEYCODE_VOLUME_DOWN
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This fetches ipfs v0.36.0 for GNU/LInux and puts it in ~/bin without a tmp file or anything else. This works if you already have ~/bin. The `--strip-components=1` flag removes the "kubo" directory in this case. If you have a tar with an even deeper directory structure, say: `some/other/directory/file`, you can just use `--strip-components=3` and it will only extract `file` for you. `-C ~/bin` puts the file in the designated path. In this case, `~/bin`. Show Sample Output
1tar --strip-components=1 -C ~/bin/ -xzf <( curl -L https://dist.ipfs.tech/kubo/v0.36.0/kubo_v0.36.0_linux-amd64.tar.gz ) kubo/ipfs -
Show top 10 users by memory combined consumption in percentage. Show Sample Output
-1ps aux | awk '{arr[$1]+=$4}; END {for (i in arr) {print i,arr[i]}}' | sort -hk2 | tail -10 -
If you need to see a list of the reboots of your system with date and time stamps then on a Linux with systemd you can use (as non-root) the command: journalctl --list-boots This could be useful if you are trying to track when a power outage occurred. An alternative is:
/bin/sudo grep "^-" /var/log/boot.log^ This only shows the boot start date/times while the journalctl command shows a "LAST ENTRY" associated with each "BOOT ID". Show Sample Output1$ journalctl --list-boots # display tabular history of reboots -
1while true; do input tap $(wm size | awk -F 'x' '{print $1/2 " " $2/2}'); done
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0mount -t cifs -o username=administrator,password=xxx,vers=1.0,sec=ntlmv2 //192.168.0.30/nas_share /mnt/win_share
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This will download a video when given the link and it will extract the audio from the video. The filename will be the same as the video's title. File extension in mp3.
11yt-dlp --extract-audio --audio-format mp3 --audio-quality 0 -o "%(title)s.%(ext)s" <youtube_link_here> - 1 2 3 > Last ›
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