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- terminal
- ow it technically works ===== A terminal control code is a special sequence of characters that is print... any other text). If the terminal understands the code, it won't display the character-sequence, but wil... a matching ANSI escape, you'll see a :?: as the code. Feel free to mail me or fix it. The ANSI codes ... _Capabilities__ section. The //cap-name// is the code to use with tput. A description of each code is a
- ffmpeg
- audio file, often autogenerated visuals. All the code is supposed to be used as one line without line-breaks.< ====== Audio Vector Scope ====== <code csharp [enable_line_numbers="true",highlight_line... -map 0:a -b:v 700k -b:a 360k OUTPUT_VIDEO.mp4 </code> The code above creates a mp4 video file with a vectorscope nicely centered inside a 854×480 (480p) vi
- reseau @windows
- fenêtre de commandes (Démarrer/Executer/cmd): <code>Dump netsh -c interface dump> Config_backup.txt </code> // Config_backup.txt// contient toutes les ... ur le réutiliser les fois suivantes, on retapes: <code> Restore netsh -f Config_backup.txt </code> - Pour éviter d'avoir à ouvrir une fenêtre de command
- truecolor @terminal
- 24-bit true color: "888" colors (aka 16 milion) <code bash> printf "\x1b[${bg};2;${red};${green};${blue}m\n" </code> The 256-color palette is configured at start an... the color itself. This is a good test case: <code bash> printf "\x1b[38;2;255;100;0mTRUECOLOR\x1b[0m\n" </code> - or https://raw.githubusercontent.com/John
- scripting @terminal
- ines that helped me to read and understand my own code over the years. They also will help to produce code that will be a bit more robust than "if something b... course. But I have seen so much ugly and terrible code (not only in shell) during all the years, that I'm 100% convinced there needs to be //some// code layout and style. No matter which one you use, us
- obselete @terminal
- hould be irrelevant to most everyone except maybe code golfers. New scripts should never use them. None ... ession. See: [[syntax:redirection | redirection]]<code bash> $ { bash; dash </dev/fd/0; } <<<'echo foo>/dev/null&>/dev/fd/2 echo bar' foo echo bar bar</code>| |''$[EXPRESSION]'' |''<nowiki>$((EXPRESSION))<... ns such as encouraging bad practices or dangerous code. Those that are specified by POSIX may be badly d
- color @terminal
- -bit true color: "888" colors (aka 16 milion)\\ <code bash> printf "\x1b[${bg};2;${red};${green};${blue}m\n" </code> The 256-color palette is configured at start an... fy the color itself. This is a good test case: <code bash> printf "\x1b[38;2;255;100;0mTRUECOLOR\x1b[0m\n" </code> - or https://raw.githubusercontent.com/JohnMora
- behaviours @terminal
- ing (excerpt from a Bash maintainer's document): <code> Starting Bash with the `--posix' command-line op... sh'. 2. The message printed by the job control code and builtins when a job exits with a non-zer... s)'. 3. The message printed by the job control code and builtins when a job is stopped is `Stopp... ct-posix-default' to `configure' when building. </code> FIXME help me to find out what breaks in POSIX
- basics @terminal
- a Bash script with that filename as a parameter: <code> bash ./myfile </code> There is **no need to add a boring filename extension** like ''.bash'' or ''.sh'... ilename extension is a convention, nothing else. <code> chmod +x ./myfile </code> If the file is executable, and you want to use it by calling only the scrip
- portsentry @secu
- cas de détection de connexion par Portsentry : <code> # 0 = Ne rien faire, juste loguer .... # 1 = Blo... rne (KILL_RUN_CMD) BLOCK_UDP="0" BLOCK_TCP="0" </code> La première option, l'option 0, vous permettr
- redirection @scripts
- direct this descriptor, you just use the number: <code> # this executes the cat-command and redirects it... to the bit bucket cat some_file.txt 2>/dev/null </code> Whenever you **reference** a descriptor, to poin... e a "''&''" followed by a the descriptor number: <code> # this executes the echo-command and redirects i... ard error target echo "There was an error" 1>&2 </code> The redirection operation can be **anywhere** i
- quoting @scripts
- e removed before the command is called! Example: <code> ### NO NO NO: this passes three strings: ### ... MYARG="my multiword argument" command "$MYARG" </code> ===== Per-character escaping ===== Per-charact... not have a special meaning using the backslash: <code> echo \$HOME is set to \"$HOME\" </code> * ''\$HOME'' won't expand because it's not in variable-expan
- positional-parameters @scripts
- ization: __Testscript__ - it just echos ''$0'': <code> #!/bin/bash echo "$0" </code> You see, ''$0'' is always set to the name the script is called with (''>'' is the prompt...): <code> > ./testscript ./testscript </code> <code> > /usr/bin/testscript /usr/bin/testscript </code> However
- obsolete @scripts
- hould be irrelevant to most everyone except maybe code golfers. New scripts should never use them. None ... ession. See: [[syntax:redirection | redirection]]<code bash> $ { bash; dash </dev/fd/0; } <<<'echo foo>/dev/null&>/dev/fd/2 echo bar' foo echo bar bar</code>| |''$[EXPRESSION]'' |''<nowiki>$((EXPRESSION))<... ns such as encouraging bad practices or dangerous code. Those that are specified by POSIX may be badly d