All commands (14,187)
-
the advantage to doing it this way is that you can adjust the max depth to get more recursive results and run it on non GNU systems. It also won't print trailing slashes, which can easily be removed, but can be slightly annoying.. You could run: # for file in `find * -maxdepth 0 -type d`;do ls -d $file;done and in the ls -d part of the command you can put in whatever parameters you want to get things like permissions, time stamps, and ownership. Show Sample Output
0find * -maxdepth 0 -type d -
wait a hour and 10 seconds to shutdown Show Sample Output
0sudo shutdown -h <hour:minute> -
0while true; do curl -vsL -o /dev/null example.com 2>&1 | grep 503 > /dev/null || echo "OK: server is up."; sleep 8; done
-
0x11vnc -storepasswd "password" ~/my_vnc_pass
-
0niki
-
Appends 4 configuration lines to your ~/.inputrc which allow you to seach history taking into account the characters you have typed so far. It is taken straight form https://help.ubuntu.com/community/UsingTheTerminal Go there for a complete description (grep for "Incremental history searching"). Not sure about the limits of this (which OS's/terminals), but probably anything unix/linux like will do. Changed my life :) Show Sample Output
0echo '\n"\e[A": history-search-backward\n"\e[B": history-search-forward\n"\e[C": forward-char\n"\e[D": backward-char\n' >> ~/.inputrc -
Extract any ".zip" attachment from the e-mail.
0uudeview +e .zip -i mail.eml -
Checks if the aspect ratio is approximately 1.6 (16:10) or ~1.77777778 (16:9). Requires mpv_identify from mpv project https://github.com/mpv-player/mpv/blob/master/TOOLS/mpv_identify.sh (this replaces mplayer -identify, or midentify) Show Sample Output
0./mpv_identify.sh * | egrep '^video_aspect=1\.[67]' -
Remove all arguments related to linux kernel from a list which uses space as item separator.
0sed 's/linux-[^ ]* \{0,1\}//g' /path/to/file -
Check out Gate number for your flight from CLI with Chrome, html2texgt and grep. Works on Arch Linux (Garuda) and probably will work on others. Requirements: * google chrome (might work with chromium as well) * installed html2text (on archlinux: sudo pacman -S python-html2text) * installed grep (comes by default with your OS) * the gate number should be visible at the given website (it's not existent too early before the flight and also disappears after the flight departed) Please don't forget to replace the link to appropriate one, matching your flight. You can also wrap this into something like `whlie true; do ...; sleep 60; done' and this will check and tell you the gate number maximum in 1 minute after it appears on Avinor website. Show Sample Output
0google-chrome-stable --headless --dump-dom --disable-gpu "https://avinor.no/flight/?flightLegId=dy754-osl-trd-20220726&airport=OSL" 2>/dev/null | html2text | grep -A2 Gate -
Works on Laptops, Desktop having communication b/w UPS & CPU Show Sample Output
0NotifyOnBATTERY () { while :; do on_ac_power||notify-send "Running on BATTERY"; sleep 1m; done } -
Use w_scan to build italian DTT video channel list. To change country, substitute IT with 2 letter country code. Userful to be played in vlc by:
vlc -f dvb-channels.confShow Sample Output0w_scan -X -P -t 2 -E 0 -c IT > dvb-channels.conf -
Use the excellent sensiblepasswords.com to a generate random (yet easy-to-remember) password every second, and copy it to the clipboard. Useful for generating a list of passwords and pasting them into a spreadsheet. This script uses "madebynathan"'s "cb" function (http://madebynathan.com/2011/10/04/a-nicer-way-to-use-xclip/); you could also replace "cb" with
xclip -selection cRemove "while true; do" and "; done" to generate and copy only 1 password. Show Sample Output0while true; do curl -s http://sensiblepassword.com/?harder=1 | tail -n 15 | head -n 1 | sed 's;<br/>;;' | cut -c 5- | cb; sleep 1; done -
Marks all manually installed deb packages as automatically installed. Usefull to combine with
apt-get install <all manually packages that we want>to have a clean installed debian-based system.0aptitude -F "%p" search \!~M~i~T | xargs apt-mark markauto -
This will be very helpful when you are debugging shell scripts, where you don?t want to display the echo statement and interested in only looking at the error messages. Similarly use 2> to supress error messages Show Sample Output
0cat file.txt > /dev/null -
Only requirement is bash shell. No functions needed. Show Sample Output
0mkdir -p /path/to/folder.d; \cd $_ -
Another way to view some code by keyword and basic regular expression
0locate *\\.php|xargs grep --color=always -i -5 "namespace\s.*\W"|less -
0x11vnc -many -rfbauth ~/.vnc_passwd -forever -nevershared
-
I occasionally need to see if a machine is hitting ulimit for threads, and what process is responsible. This gives me the total number, sorted low to high so the worst offender is at the end, then gives me the total number of threads, for convenience.
0(ps -U nms -o pid,nlwp,cmd:500 | sort -n -k2) && (ps -U nms -o nlwp | tail -n +2 | paste -sd+ | bc) -
0tail -f log.txt | egrep --line-buffered 'WARN|ERROR' | tee filtered_output.txt
-
to view on another box:
nc <server address> <port> | ffplay -use -r to adjust FPS and -q to adjust compression. use on trusted network only as nc is unencrypted.0ffmpeg -f x11grab -s $(xrandr | awk '/*/ {print $1}') -r 10 -i :0 -an -q 10 -f mjpeg - | nc -lp <port> -
0cat [mysql_dump_file] | grep "Table structure" | cut -c 30- | tr '\n' ' ' | rev | cut -c 2- | rev | tr -d '`'
-
This will allow you to get the root certificate of a virtual vCenter appliance. Useful for when you need to make api calls, say with python, and you need to verify the ssl's certificate for the endpoint. Tested on vCenter 6.5.
0/usr/lib/vmware-vmafd/bin/vecs-cli entry list --store TRUSTED_ROOTS -
It works extremely fast, because it calculates md5sum only on the files that have the same size and name. But there is nothing for free - it won't find duplicates with the different names. Show Sample Output
0find -type f -printf '%20s\t%100f\t%p\n' | sort -n | uniq -Dw121 | awk -F'\t' '{print $3}' | xargs -d '\n' md5sum | uniq -Dw32 | cut -b 35- | xargs -d '\n' ls -lU -
Using the standard numeric comparison but suppressing the STDERR output acts as the simplest way to check a value is numeric. See sample output for some examples. Show Sample Output
0if [ "$testnum" -eq "$testnum" 2>/dev/null ]; then echo It is numeric; fi - ‹ First < 394 395 396 397 398 > Last ›
What's this?
commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.
Check These Out
Stay in the loop…
- Follow the Tweets.
-
Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10 - Subscribe to the feeds.
-
Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):
Subscribe to the feed for:
- » all commands
- » commands with 3 up-votes (commandlinefu3)
- » commands with 10 up-votes (commandlinefu10)