Tag archives for bash scripting - Page 2
Loop through a date range in Shell Script
Loop through a date range in Shell Script Here is a simple shell script which accept two date value as argument and perform desired action for date value in #!/usr/bin/bash start=$1 end=$2 start=$(date -d $start +%Y%m%d) end=$(date -d $end +%Y%m%d) while ] do echo $start start=$(date -d"$start + 1 day"…
Pass date as mandatory arguments in bash script
Pass date as mandatory arguments in bash script I came across a use case where I have to write a shell script to perform some action on two date ranges. The first argument would start date and the second argument as end date. To validate missing argument we can also…
How to define multiline string variable in shell?
How to define multiline string variable in shell? In your bash/shell scripting experience you may face scenario where you need to define multi line string variable. Here is multiple ways to define multi line string variable in shell. Method 1: Combine Multiline with \n like below and echo with -e…
How to run multiple bash scripts in parallel
If you working as a Linux administrator or as a DevOps engineer then you might get a use case where you need to run multiple bash scripts in parallel without waiting to finish execution of previous script. Let me show you possible ways to achieve this in bash script For…
Get the last ten business days in a Unix shell script
Shell script to get the last 10 weekdays and run some task for each date over an element array. #!/usr/bin/bash n=10 today=$(date +'%Y-%m-%d') for ((d=1; n>0; d++)) do # Adjust this next line to get the date format you require, +'%Y%m%d' date=$(date --date "$today -$d day") nday=$(date --date "$today -$d…
Shell script to pass multiple arguments with options
Shell script to pass multiple arguments with options This tutorial will help you to pass multiple arguments in a more organized manner. I have used two arguments "t" and "d" here. The first argument "t" will accept task value and based on the task value you can perform the respective…
How to Run a Shell Script in Infinite Loop
You can run a shell script in infinite loop by using while loop. #!/bin/bash while true do echo "Press CTRL+C to stop the script execution" # Enter your desired command in this block. done You can also do this using below inline command while true; do echo 'Press CTRL+C to stop…
Deleting Lines Containing Specific string from multiple files
Deleting Lines Containing Specific string from multiple files Deleting Lines Containing Specific string from multiple files recursively Syntax: grep -Rl "STRING" /directory/path/ | xargs sed -i "/STRING/d" Example: Below example delete lines containing @license tag from src/main/php directory all files recursively grep -Rl "@license" src/main/php | xargs sed -i "/@license/d"…
