What is LT in bash scripting?
They are just operators. Simply: gt and lt mean > (greater than) and < (less than).
What is Le in shell?
-le in Linux means less that or equal to i.e. <= Means -le checks if the value of left operand is less than or equal to ( <= ) the value of right operand, if yes then condition becomes true.
What is less than in Linux?
‘<=’ Operator: Less than or equal to operator returns true if first operand is less than or equal to second operand otherwise returns false. ‘>’ Operator: Greater than operator return true if the first operand is greater than the second operand otherwise return false.
What is $# in shell script?
$# is the number of positional parameters passed to the script, shell, or shell function. This is because, while a shell function is running, the positional parameters are temporarily replaced with the arguments to the function. This lets functions accept and use their own positional parameters.
What ls command in Linux?
If you have worked in Linux, you may be familiar with the ls command. Ls is short for “list”. This command lists information about directories and any type of files in the working directory.
What is Fi in bash?
fi fi. If statement and else statement could be nested in bash. The keyword “fi” indicates the end of the inner if statement and all if statement should end with the keyword “fi”.
What is piping in Linux?
In Linux, the pipe command lets you sends the output of one command to another. Piping, as the term suggests, can redirect the standard output, input, or error of one process to another for further processing.
What is GT in Unix?
Overview. -gt in bash(shell scripting) is a binary comparison operator which is used for arithmetic value comparison(i.e comparison of two integers). It returns true if the integer on its left is greater than the integer on right.
What does $? Mean?
$? = was last command successful. Answer is 0 which means ‘yes’. Follow this answer to receive notifications.
What is $_ in bash?
$_ (dollar underscore) is another special bash parameter and used to reference the absolute file name of the shell or bash script which is being executed as specified in the argument list. This bash parameter is also used to hold the name of mail file while checking emails.
What is $2 in bash?
$2 is the second command-line argument passed to the shell script or function.
What is operator in bash?
Bash has a large set of logical operators that can be used in conditional expressions. The most basic form of the if control structure tests for a condition and then executes a list of program statements if the condition is true. There are three types of operators: file, numeric, and non-numeric operators.