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- terminal
- rol) codes are used to issue specific commands to your terminal. This can be related to switching color... character-sequence, but will perform some action. You can print the codes with a simple ''echo'' comman... **for the currently detected terminal type** and you give standardized requests to an API or (from the... take it as quick reference. The documentation of your terminal or the ''terminfo'' database is always
- netdata
- -config curl jq nodejs </panel> You can install the latest release of netdata, using your package manager in Arch Linux (sudo pacm... Mac OS X Linux one liner For all Linux systems, you can use this one liner to install the git version
- ffmpeg
- s many more options: mastodon, twitter, facebook, youtube, all allow to upload video, but not only audi... me ffmpeg tricks, how to add interesting video to your audio file, often autogenerated visuals. All the... nicely centered inside a 854×480 (480p) video. If you need a 1:1 video, just exclude the pad part: <co... es Static spectrogram====== ====== Sometimes you want to just create a static image. ## create a
- truecolor @terminal
- ors in the terminal while "true color" means that you can display 16 million different colors at the sa... it True Color capability under the name of "RGB". You need to use the "setaf" and "setab" commands to s... r differences: a) RGB axes are not orthogonal, so you cannot use sqrt(R^2+G^2+B^2) formula b) for colo
- scripting @terminal
- 100% convinced there needs to be //some// code layout and style. No matter which one you use, use it throughout your code (at least don't change it within the same shellscript file); don't change your code layout with your mood. Some good code layo
- obselete @terminal
- names of files in the current working directory. You can't get globbing without word-splitting, or vic... -f''). [[http://mywiki.wooledge.org/BashFAQ/050 | You can't store a command or character-delimited list... ing"; it's not, it's just a way to find the place you've //forgotten// to put error handling.\\ Think o... Perl or ''throws'' in C++: tough love that makes you write better code. Many guides recommend avoiding
- color @terminal
- ors in the terminal while "true color" means that you can display 16 million different colors at the sa... it True Color capability under the name of "RGB". You need to use the "setaf" and "setab" commands to s... r differences: a) RGB axes are not orthogonal, so you cannot use sqrt(R^2+G^2+B^2) formula b) for
- behaviours @terminal
- at contain a ''/'' (slash) can't be called (hence you're limited to ''PATH'') * filenames containing
- basics @terminal
- es inside a file. The file can be executable, but you can call a Bash script with that filename as a pa... ./myfile </code> If the file is executable, and you want to use it by calling only the script name, t... ific circumstances, also by the shell itself)) of your system. In general, if a file is executable, but... !'' must be **the first two bytes** in the file! You can follow the process by using ''echo'' as a fak
- redirection @scripts
- the file descriptors 0, 1 and 2, all connected to your terminal: ^Name^FD^Description^ |''stdin''|0|sta... to the same device, the **terminal** here. Check your preferred UNIX(r)-FAQ for details, I'm too lazy ... diagnostic- and error-messages on ''stderr''. If you write a script that outputs error messages, please make sure you follow this convention! Whenever you **name** su
- quoting @scripts
- portant, as they influence the way Bash acts upon your input. There are three recognized types: * **p... ree forms have the very same purpose: **They give you general control over parsing, expansion and expan... ds (like interpreting ANSI-C escapes in a string) you'll meet below. :!: **ATTENTION** :!: The quote c... SAME AS ### command "my multiword argument" ### YOU NEED ### MYARG="my multiword argument" command "$
- positional-parameters @scripts
- ====== ===== Intro ===== The day will come when you want to give arguments to your scripts. These arguments are known as **positional parameters**. Some r... The first argument ===== The very first argument you can access is referenced as ''$0''. It is usually... chos ''$0'': <code> #!/bin/bash echo "$0" </code> You see, ''$0'' is always set to the name the script
- obsolete @scripts
- names of files in the current working directory. You can't get globbing without word-splitting, or vic... -f''). [[http://mywiki.wooledge.org/BashFAQ/050 | You can't store a command or character-delimited list... ing"; it's not, it's just a way to find the place you've //forgotten// to put error handling.\\ Think o... Perl or ''throws'' in C++: tough love that makes you write better code. Many guides recommend avoiding
- check-script @scripts
- The one of the simplest way to check your bash/sh scripts is run it and check it output or run it and c... ub.com/pahaz/bashtest|bashtest]] tool for testing your scripts. https://wiki.bash-hackers.org/howto/testing-your-scripts ==== Write simple util ==== We have a ... t passed. </sxh> Thats all. We wrote one test. You can write more tests if you want. <code> $ ls te