What does the at|sign @ mean in the bash command
bash Scripting - Shell Programming - Linux SIG
This command tells the shell to execute all the commands in the file that is passed as an argument to the command. For example, the command ". remount" can be ...
Difference between “>” and “>>” in Linux | Shells official site
“>” overwrites an already existing file or a new file is created providing the mentioned file name isn't there in the directory. This means ...
What's the Difference Between $* and $@ in Bash? - Baeldung
The $* variable represents each command-line argument as a single string. The arguments are separated by spaces and aren't joined together.
Shell scripts and other related concepts - GitHub Pages
The echo command is used to display a line of text that is passed in as an argument. This is a bash command that is mostly used in shell scripts to output ...
Bash Shell Scripting/Index of Symbols - Wikibooks
Introduces a comment (which continues to the end of the line). For example, the command foo bar baz # bip is equivalent to the command foo bar baz , because the ...
What is Bash? - Opensource.com
When you issue a command to Bash, it searches specific directories on your system to see whether such a command exists. If the command does exist, then Bash ...
Bash bang commands: A must-know trick for the Linux command line
commands introduce commands from your bash history list into the input stream. This feature makes it easy to repeat commands, substitute text, ...
Ampersands and File Descriptors in Bash - Linux.com
In this case, when you do 1> services.txt , you are saying “open a write channel to services.txt and leave it open“. 1 is the name of the ...
What does a single period ( . ) mean in bash? - LinuxQuestions.org
In a pathname it means "current directory"--eg. ./filename; As a prefix to a filename, it causes it to be hidden--eg. .filename; It is a synonym ...
Advanced Bash - More about the Command Line | OIST Groups
When you do variable substitution - when you insert the value of a variable into a place in your script - you can change or manipulate the output at the same ...
What is "-bash: !": event not found" - Server Fault
bash is interpreting the exclamation mark in echo "reboot your instance!" as "substitute here the last command that began with the character(s) ...
what does the "$" sign mean in the terminal - Ubuntu Forums
Also in Bash, $ usually means "Expand". It is not part of your variable name! You can expand "$variable" content, "$(command)" output or "$(( ...
What do <, << and <<< mean in Linux?
The here string (triple less than signs) is used when one wants to input one line of stings to a script or a command. To use the <<< , you'd ...
Ampersands & on the command line - BashItOut
In Bash, on the Linux command line, & is a control operator. It's a shell builtin meaning it's literally a core part of the Bash tool set.
Eof Bash: What Is It and How Does It Work? - KodeKloud
It provides a powerful tool in script writing, allowing you to insert variable values and command outputs directly into blocks of text. Quoted ...
What is the difference between using a single greater than sign ...
It enables the redirection of command output to files or to other commands, providing flexibility and efficiency in managing data streams. The ...
[log] Bash [ and [[. (…) parentheses indicate a subshell… - kelly woo
With a leading dollar sign, $(…) is a command substitution: there is a command inside the parentheses, and the output from the command is used ...
Introduction to the command line interface (Shell) - GitHub Pages
The Shell (bash) considers an asterisk “*” to be a wildcard character that can match one or more occurrences of any character, including no character.
bash — standard shell – Gentoo Development Guide
If you really don't want to restructure the block, you can use a single colon ( : ) on its own as a null statement. if some_stuff ; then # Do nothing : else ...
$- (dollar hyphen) bash parameter is used to get current option flags specified during the invocation, by the set built-in command or set by the bash shell ...