SHELL - HOW CAN I COMPARE NUMBERS IN BASH? - STACK OVERFLOW
compare_nums() { # Function to compare two numbers (float or integers) by using AWK. # The function will not print anything, but it will return 0 (if the comparison is true) or 1 # (if the … From stackoverflow.com
WHAT IS THE DIFFERENCE BETWEEN $@ AND $* IN SHELL SCRIPTS?
That implies that using "$@" first generates a quoted string, and then that the shell then parses it on deciding how to run the next command. It would be more accurate to say that the string … From stackoverflow.com
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
WHAT IS THE MEANING OF $? IN A SHELL SCRIPT? - LINUX
Feb 20, 2011 This latter usage is faster, does not contaminate the shell's variable namespace with what amounts to temp variables, can often be a lot more readable for humans and … 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
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
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
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