Archives for Scripting
How to concatenate string variables in Bash
Here are few preferred ways to concatenate string variables in bash script Concatenate string variables in Bash the variable one after another in echo #!/bin/bash var1="Techieroop" var2="${var1} Tutorial" echo "${var2}"…
How to check if a string contains a substring in Bash
Here are the couple of methods to check if a string contains a substring in bash shell script. Methods to check if string contains a substring in Bash Method 1:…
How to check if file does not exist in Bash?
Check if file does not exist in Bash Script? You can use -f option in bash script to check if file does not exist. Check if file does not exists…
How to check if a directory exists in a bash script?
How to check if a directory exists in a bash script? In shell script implementation you might come across use case where you need to perform some operation in a…
Shell Script Questions and Answers
Please find below list of Shell Script Questions and Answers. Shell Script Questions and Answers 1. Given two integers, X and Y , find their sum, difference, product, and quotient. Constraints X…
Check if array contains value in shell script
Check if array contains value in shell script Here is simple bash script to check if array contains value . We can iterate over array and check if value is…
How to get process ID of background process?
I usually prefer to execute process in background so that we don't need to worry if terminal got killed due to timeout or accidently. However, what if you want to…
Loop through business day and previous business day in shell
Shell script loop to execute some task for business day and previous business day. If previous business day is weekend then script should skip the weekend date and pick Friday…
How to Split String with a Delimiter in Shell Script
Split String with a Delimiter in Shell Script You can use Internal Field Separator (IFS) variable in shell script to split string into array. When we set IFS variable then…
How to validate date format in shell script
How to validate date format in shell script There are multiple ways you can validate date format in shell script. You can compare date format with regular expression or you…
