KingShell

This is just a program which I made in my class, to simulate a linux Shell;

Commands (Built-In)

• help -> It shows a list of built-in commands on standard output;
• sair/exit/quit NUMBER -> It shutdowns the program after X seconds (if you just write "quit", it will be shutdown after 3 seconds;
• cd -> It changes your current directory;
• 42 -> It shows the explanation of number 42;
• sols -> Shows the list of files and folders in the current directory;
• aviso MESSAGE NUMBER -> Shows an warning message after NUMBER seconds;
• avisoth MESSAGE NUMBER -> Shows an warning message after NUMBER seconds (by using threads);
• PS1=NAME -> It changes the default prefix to a word that you want to choose (if you write {default} it will give the default prefix;
• calc NUMBER OP NUMBER -> It calculates an operation between two real numbers;
• bits NUMBER OP NUMBER -> It calculates a binary operation between two integer numbers;
• quemsoueu -> It calls the system("id") function;
• socp FILE1 FILE2 -> It copies the content of FILE1 to FILE2;
• socpth FILE1 FILE2 -> It copies the content of FILE1 to FILE2 (using threads);
• rocket -> It shows a rocket in the standard output (see https://helloacm.com/simple-cc-rocket-animation/ )
• jpg (or jpeg) FILE1 -> It checks if FILE1 is a JPEG file;

Redirects, Pipes, Background/Foreground and Threads

This program also has redirect support for non-builtin commands (e.g: ls), also as Pipe and Backgroud executes support;

Supported Redirects:

• Input (<);
• Append Output (>>);
• Output (>);
• Error Output (2>);