Bourne-again shell (Bash)

Bash (Bourne-again shell) is a command language interpreter. Simply put, it is a text windows interprets commands that you type. It was written by Brian Fox for the GNU Project as a replacement for the Bourne shell (sh), one of the earliest UNIX shells. Bash offers functional improvements over sh for both programming and interactive use.

Bash is the default shell in most Linux distributions. It supports some advanced features like wildcarding, piping, command substitution, variables, and the history of commands entered. Another neat feature that will save you a lot of time is the tab completion, which means that you can type just enough of the filename to uniquely identify it and than press the Tab key. Bash will automatically complete your command.

Here is a picture of Bash in Ubuntu:

bash ubuntu

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Geek University 2019