In this example, we’ve created a ‘for’ loop that acts as a ‘foreach’ loop. The loop iterates over the numbers 1 through 5, echoing each number on a new line. This is a basic way to use the ‘foreach’ loop
The example shows how to exit an infiniteforloop using abreak. TheBash if statementhelps check the value for each integer and provides thebreakcondition. This terminates the script when an integer reaches the value ten. To exit a nested loop and an outer loop, usebreak 2. Continue Thecontin...
gcp_ci_deploy_k8s.sh - script template for CI/CD to deploy GCR docker image to GKE Kubernetes using Kustomize gce_*.sh - Google Compute Engine scripts: gce_foreach_vm.sh - run a command for each GCP VM instance matching the given name/ip regex in the current GCP project gce_host_...
A nested loop is a loop within a loop. When working with arrays, you might find a situation where you need to loop through multiple arrays simultaneously. For example, you might have a script that needs to compare the elements of two arrays. Here’s an example: fruits=('apple' 'banana'...
#Asmall example programforusing thenewgetopt(1)program.# This program will only workwithbash(1)# An similar program using thetcsh(1)script language can be found #asparse.tcsh # Example input andoutput(from the bash prompt):#./parse.bash-a par1'another arg'--c-long'wow!*\?'-cmore-...
done < ${FILENAME} Store Filename in Variable You can also pass file names as an argument to your script. while read LREAD do echo ${LREAD} done < $1 | head -n 5 Store Filename as Argument Internal Field Separator You may work with different types of file formats (CSV,TXT,JSON) ...
printf "\\e[?25h\\n\\e[1;48;5;138m %s\\e[0m\\n" "TermuxArch WARNING: Generated script signal ${RV:-unknown} near or at line number ${1:-unknown} by \`${2:-command}\`!" if [[ "$RV" = 4 ]] then printf "\\n\\e[1;48;5;139m %s\\e[0m\\n" "Ensure bac...
There are two ways to add comments to a script. The first method is by typing # at the beginning of a single-line comment.#!/bin/bash #Command below prints a Hello World text echo “Hello, world!”The second method is by using : followed by ‘. This method works for multiple-line...
file file 1 file2 A script designatespositional parametersas $0, $1, $2, $3, $4 and so forth. These parameters enable you to pass arguments from the command line to a script. Crafting a script to use arguments Every Bash script begins with the line: ...
Run BashScript.sh 1 2 3 ./BashScript.sh Output 1 2 3 4 5 Enter the number n for the nth line you want to print: 4 This is 4th line This is 8th line In this example, the awk command gets every 4th line from the file test.txt. Here, the file variable contains the file...