Calculate the Sum of a Column Using the “Awk” Script in Bash
Comprehensive tutorial on the multiple ways of calculating the sum of a column from a file using the “awk” script in Bash through different examples
Use of Not Equal to the Operator in Bash
Practical tutorial on method of comparing two values using the “!=” and “-ne” operators to check the equality or inequality of two strings or numbers.
How to Find the Array Length in Bash
Tutorial on the methods of counting the length of an array in Bash using the “#” symbol or loop, or using the “wc” or “grep” commands along with examples.
How to Use the Recursive Grep Command to Search in the Directory
Practical guide on how to use the recursive “grep” command to search the content in a directory of multiple files using different types of options and patterns.
Check the Number of Arguments in the Bash Script
Checking the uses of the number of arguments in Bash script for various purposes such as error handling, providing messages based on the number of arguments.
Check If the File Exists in Bash
The method of checking if a regular file exists in Bash or not in the current or particular location using the file test operators with the “test” command.
Bc Command in Bash Scripts
Tutorial on the various uses of the “bc” command in Bash scripts to generate the fractional value of any mathematical calculation with the precision value.
.Bash_Profile File in Bash
Tutorial on the “.bash_profile” file in Bash to set the environment variable or define any script to perform the automated tasks at the startup of the system.
Bash Sleep Command
How to use the Bash sleep command to stop the execution of the script for a certain period or do any scheduled task before executing a particular script.
How To Check Existence of Input Argument in a Bash Shell Script
We can use different techniques to check the existence of input arguments, such as using the “test” command, the “$#” variable, or the “-n” option.
How to Fix – bash: pip: command not found
The “pip: command not found” error can be easily corrected by checking if pip is installed, installing it if necessary, and setting the path to pip in the Bash.
How to Add a New Element to an Array Without Specifying the Index in Bash
To add a New Element to an Array Without Specifying the Index in Bash, use the += operator with the name of the array. Read this guide for more details.
How To Echo Shell Commands as They Are Executed in Bash
Echoing shell commands as they are executed can be done by using the set command, the -x option and the DEBUG trap. Read this guide for more details.
What Does -z Mean in Bash
The -z option in Bash is a powerful tool for testing whether a string is empty. Read this guide for more details.
Is There a “goto” Statement in Bash
In Bash, there is no “goto” statement, instead, Bash provides alternative constructs that can achieve the same effect as a “goto”.
How to Block Comments in a Shell Script-Bash
Block comments can span multiple lines of code. In shell scripting, we can create block comments by enclosing the comments within the <<‘EOF’ and ‘EOF’ markers.
How Do I Execute a Bash Script in Terminal
To run a bash script in terminal there are four ways: through its path, through source, through sh command and through bash interpreter.
Echo without Newline Character in Bash
To use echo without newline character in bash there are three ways: using -n option, using -e option with escape sequence and using tr command.
Bash exit 1 and exit 0 – What’s the Difference?
The exit(1) means that the command was not executed successfully whereas exit (0) shows that command executed successfully.
How to Assign Output of a Linux Command to a Variable – bash
To assign output of a Linux command to a variable in bash there are two ways one is through backticks and other is through command substitution.