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What is the difference between bash and bin bash?
The answer to this question is, ” -bash denotes a login shell and /bin/bash denotes a non-login shell.” The answer to the other question is a list of differences between login shells and non-login shells.
Should I use bash or sh?
Basically bash is sh, with more features and better syntax. Most commands work the same, but they are different. Bash (bash) is one of many available (yet the most commonly used) Unix shells. Bash stands for “Bourne Again SHell”,and is a replacement/improvement of the original Bourne shell (sh).
Is #!/ Bin bash necessary?
You must have the #!/bin/bash then so it will be executed in bash and not some other shell. Also so it will be executed at all if the program trying to execute it isn’t a shell itself. Then there are scripts in completely different languages, such as Perl or Python.
What happens when you run bin bash?
Adding #!/bin/bash as the first line of your script, tells the OS to invoke the specified shell to execute the commands that follow in the script.
When should I use bin bash?
/bin/bash is the most common shell used as default shell for user login of the linux system. The shell’s name is an acronym for Bourne-again shell. Bash can execute the vast majority of scripts and thus is widely used because it has more features, is well developed and better syntax.
What is the difference between sh and bash?
Like sh, Bash (Bourne Again Shell) is a command language processor and a shell. Bash is a superset of sh, which means that Bash supports features of sh and provides more extensions on top of that. Though, most of the commands work similarly as in sh.
What does V do in Linux?
The -v option tells the shell to run in verbose mode. In practice, this means that the shell will echo each command prior to executing the command. This will be useful in locating the line of script that has created an error.