• Enhanced Buffer in order to avoir mistakes with redirections that empty your files

  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 Portability: uses bash-compatible constructs but relies on mktemp and -a (POSIX [ -a ] is obsolete; better to use -e).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.

  This is sample output - yours may be different.
  
  

  -2
  buffer(){ 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ドル" ]&&{ cat "$tmp"; rm -f "$tmp"; return 0; }; mv -f "$tmp" "1ドル"; }
  cryptology_codes · 2025年09月14日 21:19:55 165
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• Android VOLUME_DOWN

  This is sample output - yours may be different.
  
  

  -1
  adb shell input keyevent KEYCODE_VOLUME_DOWN
  alikhalil · 2025年08月13日 13:22:00 47
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• Extract one file from a remote tar.gz and put it where you want it

  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`.

  This is sample output - yours may be different.

  $ tar -C ~/bin/ --strip-components=1 -xzf <( curl -L https://dist.ipfs.tech/kubo/v0.36.0/kubo_v0.36.0_linux-amd64.tar.gz ) kubo/ipfs
   % Total % Received % Xferd Average Speed Time Time Time Current
   Dload Upload Total Spent Left Speed
  100 49.0M 100 49.0M 0 0 26.1M 0 0:00:01 0:00:01 --:--:-- 26.1M

  
  

  2
  tar --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
  renich · 2025年08月12日 03:38:07 51
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• List memory percentage per user

  Show top 10 users by memory combined consumption in percentage.

  This is sample output - yours may be different.

  user01 1.6
  user02 2.8
  user03 2.8
  user04 3.2
  user05 4.9
  user06 5.5
  user07 6.6
  user08 13.6
  user09 13.7
  user10 16.5

  
  

  0
  ps aux | awk '{arr[1ドル]+=4ドル}; END {for (i in arr) {print i,arr[i]}}' | sort -hk2 | tail -10
  Raboo · 2025年08月01日 07:06:55 46
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• Display history of reboots

  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".

  This is sample output - yours may be different.

  $ journalctl --list-boots
  IDX BOOT ID FIRST ENTRY LAST ENTRY 
  [data redacted]

  
  

  0
  $ journalctl --list-boots # display tabular history of reboots
  mpb · 2025年07月22日 14:52:34 20
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• Tapping screen for TikTok using shell script

  This is sample output - yours may be different.
  
  

  0
  while true; do input tap $(wm size | awk -F 'x' '{print 1ドル/2 " " 2ドル/2}'); done
  wuseman1 · 2025年05月27日 13:32:54 114
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• Mount SMB v1 share on Linux

  This is sample output - yours may be different.
  
  

  0
  mount -t cifs -o username=administrator,password=xxx,vers=1.0,sec=ntlmv2 //192.168.0.30/nas_share /mnt/win_share
  swarzynski · 2025年03月20日 08:16:19 124
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• Download and Extract mp3 from Youtube Video

  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.

  This is sample output - yours may be different.
  
  

  8
  yt-dlp --extract-audio --audio-format mp3 --audio-quality 0 -o "%(title)s.%(ext)s" <youtube_link_here>
  keyboardsage · 2024年11月22日 19:54:54 98
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• Get a random quote from Breaking Bad

  Hit an API with curl returning a random quote, then parse the result with jq.

  This is sample output - yours may be different.

  "A guy that clean has to be dirty." -- Hank Schrader

  
  

  8
  curl -s https://api.breakingbadquotes.xyz/v1/quotes | jq -r '.[] | "\"\(.quote)\" -- \(.author)"'
  malathion · 2024年09月09日 14:58:37 66
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• Matrix - Just 1 wobbly line rather then a rain! (shorter)

  No sample. Try it and see the magic!

  This is sample output - yours may be different.
  
  

  3
  while true; do printf "\e[32m%*s\e[0m" $(tput cols) $(shuf -e {0..1} -n $(tput cols)); sleep 0.1; done
  wuseman1 · 2024年09月02日 00:44:33 60
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• Matrix - Just 1 wobbly line rather then a rain!

  Remove clear; sleep 5 and echo for not doing sample!

  This is sample output - yours may be different.
  
  

  1
  clear; sleep 5; echo 'while :; do printf "\e[32m%*s\e[0m" $(tput cols) $(shuf -e {0..1} -n $(($(tput lines) * $(tput cols)))); sleep 0.1; done'
  wuseman1 · 2024年09月02日 00:40:34 60
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• This command will help you to hunt the current mysql query statement in real time. (-R is deprecated, using updated -Y)

  This is sample output - yours may be different.
  
  

  1
  tshark -s 512 -i eno1 -n -f'tcp dst port 3306' -Y'<mysql.query>' -T fields -e <mysql.query>
  wuseman1 · 2024年08月26日 19:29:05 84
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• Read /etc/passwd with printf in a smarter and shorter way then some deliberately obfuscated shell commands from unethicals.

  This is sample output - yours may be different.
  
  

  1
  eval "$(E3LFbgu='CAT /ETC/PASSWD';printf %s "${E3LFbgu~~}")"
  wuseman1 · 2024年08月26日 19:20:48 49
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• Portscan entire internet (ipv4)

  This is sample output - yours may be different.
  
  

  0
  (masscan 0.0.0.0/0 -p80 --banner --exclude 255.255.255.255 --max-rate 100000|tee internet_ips_to_block_ranges.txt 2>&1 /dev/null); 1&> /dev/null
  wuseman1 · 2024年08月26日 19:14:02 38
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• In emergency situations, in order not to panic, shut down the following port on the network with the following rather then shutting down the PC.

  This is sample output - yours may be different.
  
  

  2
  fuser -k 445/tcp
  wuseman1 · 2024年08月26日 19:11:03 34
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• Generate a correct mac addr.

  1) The last sed expression ensures the unicast/multicast bit is set to zero 2) The greedy space replacements are for portability across UNIX seds

  This is sample output - yours may be different.

  a0:94:47:e1:f7:59

  
  

  1
  od -An -N6 -tx1 /dev/urandom |sed -e 's/^ *//' -e 's/ */:/g' -e 's/:$//' -e 's/^\(.\)[13579bdf]/10円/'
  wuseman1 · 2024年08月26日 19:10:02 48
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• Launch hidden commands.

  This is sample output - yours may be different.
  
  

  0
  /bin/bash -c "exec ls"
  wuseman1 · 2024年08月26日 19:08:24 209
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• Do we use: 'Wayland' OR 'x11' (systemd version)

  This is sample output - yours may be different.
  
  

  1
  loginctl show-session $XDG_SESSION_ID -p Type
  wuseman1 · 2024年08月26日 19:07:02 28
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• Do we use: 'Wayland' OR 'x11'

  This is sample output - yours may be different.
  
  

  1
  printf 'Session is: %s\n' "${DISPLAY:+X11}${WAYLAND_DISPLAY:+WAYLAND}"
  wuseman1 · 2024年08月26日 19:06:32 29
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• View emerge log by date in humand friendly time

  This is sample output - yours may be different.
  
  

  1
  awk -F: '{print strftime("%Y-%m-%d -> %X --> ", 1ドル),2ドル}' /var/log/emerge.log
  wuseman1 · 2024年08月26日 19:03:05 24
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• Find the right intel-ucode firmware for Intel GPU

  This is sample output - yours may be different.
  
  

  1
  iucode_tool -S -l /lib/firmware/intel-ucode/*
  wuseman1 · 2024年08月26日 19:01:55 23
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• Disable Show More Options on Windows 11

  Enable it again: reg delete "HKEY_CURRENT_USER\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}" /f

  This is sample output - yours may be different.

  Successfully completed.

  
  

  0
  reg add "HKCU\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}\InprocServer32" /f /ve
  wuseman1 · 2024年08月26日 18:56:51 22
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• Generate a QR code in the terminal

  This is sample output - yours may be different.
  
  

  1
  printf 'https://www.gentoo.org/' | curl -F-=\<- qrenco.de
  wuseman1 · 2024年08月26日 18:41:24 15
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• Shuffle a reversed string without new lines (Simple way to create a progress bar)

  This is sample output - yours may be different.
  
  

  0
  while true; do slumpad_eversed=$(echo "$eversed_part" | grep -o . | shuf | tr -d '\n'); tput cr && tput el && echo -n "$r_part$slumpad_eversed" ; sleep 1 ; done
  wuseman1 · 2024年08月26日 18:37:43 58
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• Shuffle two letters randomly

  Use variable: letters=("a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s" "t" "u" "v" "w" "x" "y" "z")

  This is sample output - yours may be different.
  
  

  0
  while true; do shuffled_letter1=$(printf "%s\n" "${letters[@]}" | shuf -n 1); shuffled_letter2=$(printf "%s\n" "${letters[@]}" | shuf -n 1); printf "%s%s\r" "$shuffled_letter1" "$shuffled_letter2"; sleep 0.1; done
  wuseman1 · 2024年08月26日 18:36:29 54
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