The Bash Shell
Bash is short for Bourne Again Shell. This shell is available as free software under the GNU license. The name reflects the bash shell's origins as an enhanced version of the Bourne shell. It also is typical of the sly sense of humor—some might say silliness—sometimes used in naming Linux free software programs.
Bash is the default Red Hat Linux shell. It is generally an easy shell to work with. According to the Free Software Foundation, "bash is an sh-compatible shell that incorporates useful features from the Korn shell ksh and the C shell csh."
Unless you are already used to another shell, you probably should stick with the bash shell.
Working with environment variables
An environment variable is used to expose information to ...
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