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What does set in bash script do?
set allows you to change the values of shell options and set the positional parameters, or to display the names and values of shell variables.
What does set command do?
The SET command is used to set values that will be used by programs. DOS holds the set strings in the area of memory reserved for the environment (if the string already exists in the environment, it is replaced).
Is set a Bash command?
About The set Command This new Shell is the execution environment of the script, and different parameters of the environment can be given in Bash by default. The set command is used to modify the operating parameters of the Shell environment, which means that the environment can be customized.
When to use the set option in Bash?
This option is on by default for interactive shells. If set, do not resolve symbolic links when performing commands such as cd which change the current directory. The physical directory is used instead. By default, Bash follows the logical chain of directories when performing commands which change the current directory.
What do you do with the SET command?
Set command. Use the set command to set or unset values of shell options and positional parameters. You can change the value of shell attributes and positional parameters, or display the names and values of shell variables using set command.
What are the names of the commands in Bash?
BASH_COMMAND : The command currently being executed or about to be executed, unless the shell is executing a command as the result of a trap, in which case it is the command executing at the time of the trap. BASH_EXECUTION_STRING : The command argument to the -c invocation option. BASH_LINENO
Why does Bash ignore the foo command in the script?
In the above script, foo is a non-existent command and it is supposed to report an error when executed. However, Bash will ignore the error and continue to execute. As you can see, Bash shows there is an error but doesn’t terminate the execution. This behavior is not conducive for script security and debugging.