SHELL - DIFFERENCE BETWEEN SH AND BASH - STACK OVERFLOW
Shell - "Shell" is a program, which facilitates the interaction between the user and the operating system (kernel). There are many shell implementations available, like sh, Bash, C shell, Z … From stackoverflow.com
SHELL - WHAT DOES "--" (DOUBLE DASH / DOUBLE HYPHEN) MEAN?
In man bash we can read in Shell Builtin Commands section : Unless otherwise noted, each builtin command documented in this section as accepting options preceded by -accepts --to … From unix.stackexchange.com
BASH - WHAT IS THE PURPOSE OF "&&" IN A SHELL COMMAND? - STACK …
Oct 27, 2021 In shell, when you see $ command one && command two the intent is to execute the command that follows the && only if the first command is successful. This is idiomatic of … From stackoverflow.com
SHELL - WHAT IS THE "EVAL" COMMAND IN BASH? - UNIX & LINUX STACK …
In shell terminology, eval is a built-in, not a function. In practice, built-ins behave a lot like functions that don't have an in-language definition, but not quite (as becomes apparent if you … From unix.stackexchange.com
WHAT DOES $# MEAN IN SHELL? - UNIX & LINUX STACK EXCHANGE
You can always check the man page of your shell. man bash says: Special Parameters # Expands to the number of positional parameters in decimal. Therefore a shell script can check … From unix.stackexchange.com
REGEX - MEANING OF "=~" OPERATOR IN SHELL SCRIPT - STACK OVERFLOW
Sep 17, 2012 The return value is 0 if the string matches the pattern, and 1 otherwise. If the regular expression is syntactically incorrect, the conditional expression's return value is 2. If … From stackoverflow.com
DIFFERENCE BETWEEN $ {} AND $ () IN A SHELL SCRIPT - SUPER USER
The above (along with many more forms of ${parameter…something_else} constructs) are discussed at greater length in the shell’s man page, bash(1). A Note on Quotes. Note that you … From superuser.com
WHAT IS THE $? (DOLLAR QUESTION MARK) VARIABLE IN SHELL SCRIPTING?
The shell treats several parameters specially. These parameters may only be referenced; assignment to them is not allowed. [...]? Expands to the exit status of the most recently … From stackoverflow.com
LINUX - WHAT DOES $@ MEAN IN A SHELL SCRIPT? - STACK OVERFLOW
Apr 3, 2012 The shell splits tokens based on the contents of the IFS environment variable. Its default value is \t\n; i.e., whitespace, tab, and newline. Expanding "$@" gives you a pristine … From stackoverflow.com
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