All commands (13,958)
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Works for debian and ubuntu based distros. Show Sample Output
0apt list --upgradable | grep -v 'Listing...' | cut -d/ -f1 | tr '\r\n' ' ' | sed '$s/ $/\n/' -
The number 5 means to replace the leading and trailing 5 characters of an "@" in a log file with XXXX@XXXXX.
-1%s/.\{5\}@.\{5\}/XXXXX@XXXXXX/g -
0curl -s https://api.github.com/users/<username>/repos?per_page=1000 | grep -oP '(?<="git_url": ").*(?="\,)'
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1ss -plunt
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This assumes you are in the cwd of where you put your s3 scripts. Its useful if someone decides to create aws cloudformation scripts and doesn't add the 'yaml' or .yml extension. Show Sample Output
0rg -l "AWSTemplateFormatVersion: '2010-09-09'" * -
Python is installed on many boxes (in case you could not afford installing jq).
-1curl -s "https://api.github.com/users/<username>/repos?per_page=1000" | python <(echo "import json,sys;v=json.load(sys.stdin);for i in v:; print(i['git_url']);" | tr ';' '\n') -
in case you could afford installing jq
0curl -s "https://api.github.com/users/<username>/repos?per_page=1000" | jq '.[].git_url' -
Using the csv tool `miller` you can transform a csv file into a json array of objects, where the properties are the values of the csv header line and the values are the values of the subsequent lines. Show Sample Output
0mlr --c2j --jlistwrap cat file.csv -
http://alvinalexander.com/linux/unix-linux-process-memory-sort-ps-command-cpu for an overview of --sort available values
1watch -n1 "ps aux --sort=-%mem,-%cpu | head -n 50" -
Use flag "--" to stop switch parsing Show Sample Output
-1grep -- - -
11curl -s https://api.github.com/users/<username>/repos?per_page=1000 |grep git_url |awk '{print $2}'| sed 's/"\(.*\)",/\1/'
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Shell function which takes a bash command as its input, and displays the following formatted output: EXAMPLE: command OUTPUT: output from command Show Sample Output
6example() { echo "EXAMPLE:"; echo; echo " $@"; echo; echo "OUTPUT:"; echo ; eval "$@" | sed 's/^/ /'; } -
Measure the cpu performance: In-case if the cpu is thermal throttling then you can find it using this command. Check the first line of the output. Example: Doing md5 for 3s on 16 size blocks: 11406892 md5's in 2.98s ? #(When cpu is not throttling) Doing md5 for 3s on 16 size blocks: 110692 md5's in 2.98s ?? #(When cpu is thermal throttling) Practical use case: Once we had cooling outage in data center which caused thermal throttling in some of the worker nodes. We used this tool to prove that some servers are not performing well because of the cpu thermal throttling. Show Sample Output
7openssl speed md5 -
Click window to change its opacity. Source: https://unix.stackexchange.com/a/494289
0xprop -format _NET_WM_WINDOW_OPACITY 32c -set _NET_WM_WINDOW_OPACITY 0x7FFFFFFF -
This command first determines whether a second screen is connected. If this is the case, it sets the screen's RGB gamma via xrandr. Useful for cheap or slightly defective monitors with a tint. In this example a yellowing/champagne color deviation is compensated for by decreasing the red and the green portion of the image.
0secondscreen=$(xrandr -q | grep " connected" | sed -n '2 p' | cut -f 1 -d ' '); [ "$secondscreen" ] && xrandr --output $secondscreen --gamma 0.6:0.75:1 -
Change the file extension in batch. Useful to create output file names with same input name but distinct extension by including logic inside the loop
1for file in *.txt; do mv "$file" "${file%.txt}.xml"; done -
4find /glftpd/site/archive -type f|grep '([0-9]\{1,9\})\.[^.]\+$'|parallel -n1 -j200% md5sum ::: |awk 'x[$1]++ { print $2 " :::"}'|sed 's/^/Dupe: /g'|sed 's,Dupe,\x1B[31m&\x1B[0m,'
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Top 10 Memory Processes (reduced output to applications and %usage only) Show Sample Output
0ps aux | sort -rk 4,4 | head -n 10 | awk '{print $4,$11}' -
You will see it on the corner of your running terminal. Show Sample Output
2while sleep 1; do tput sc; tput cup 0 $(($(tput cols)-29)); date; tput rc; done & -
Hides all Files and Folders on the MacOS Desktop. To show files and folders, type "true" instead of "false". "Finder" at the end is case sensitive, "finder" doesn’t work
0defaults write com.apple.finder CreateDesktop -bool false;killall Finder -
0for i in *; do sum=$(md5sum $i); mv -- "$i" "${sum%% *}"; done
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Print date in iso format. Created and tested on MAC OS CATALINA. Darwin Kernel Version 19.0.0: Thu Oct 17 16:17:15 PDT 2019; root:xnu-6153.41.3~29/RELEASE_X86_64 x86_64 bash Show Sample Output
0date +%Y-%m-%dT%H:%M:%S%z -
Works for repos cloned via ssh or https. Show Sample Output
0git remote -v | sed -n '/github.com.*push/{s/^[^[:space:]]\+[[:space:]]\+//;s|git@github.com:|https://github.com/|;s/\.git.*//;p}' -
GNU grep's perl-compatible regular expression(PCRE).
0binaries () { dpkg -L "$1" | grep -Po '.*/bin/\K.*'; } -
This shell function displays a list of binaries contained in an installed package; works on Debian based Linux distributions. Show Sample Output
0binaries () { for f in $(dpkg -L "$1" | grep "/bin/"); do basename "$f"; done; } - 1 2 3 > Last ›
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