When you type something on linux shell, by default Linux save the commands what you type as history to “~/.bash_history” or /home/username/.bash_history file so that you can easily check what you have typed previously using “history” command. $ history | tail 1998 sudo apt-get install mdns 1999 sudo apt-get install mdns-scan 2000 sudo mdns-scan As … Read more
If you ever published any new post on to your blog / website, and are using rss feed, your website adds newly published post to rss xml based on date and time of publishing and this same URL remains forever with the same timestamp. Now, if you are using automated feed burners or email services … Read more
In bash script, if we want to comment a single line, we just need to add # at the start of the line, like below Now, but in certain scenarios we need to put multiple line comments, like some description of what the script is for, OR just need to disable some section of code … Read more
Following shell script does, check if android application is installed find an apk path uninstall if its already installed install new apk if application is not installed
Android devices has a daemon adbd which helps it to get connected over USB using adb command on linux host. If you are doing some kind of automation such as taking logs or installing some applications from ubuntu command line, the very first thing we need to make sure if our device is connected and … Read more
Following shell script helps to understand how to use modulo operator in bash and identify if number is completely dividable by another number and print the remainder.This script accepts two arguments on the commands line, first number is Divident and second number is Divisor. $ vim understanding_modulo_operator.sh Now, lets assume we want to divide 10 … Read more
$ vim wifi_channel_hop.sh Reference: https://github.com/brannondorsey/sniff-probes/blob/master/sniff-probes.sh
In the following script we check whether the current device is mounted or not by reading information from proc file /proc/mounts, if the device is not mounted, we use the “mount” command with sudo / superuser permission to mount the device to mount directory as mentioned in the beginning of script. $ vim script_to_check_and_mount_parition.bash
Below shell script will find and delete certain file or multiple files from the directory you want. We have used current directory from where script is run, you need to change DIR_TO_SEARCH and FILE_TO_SEARCH_N_DEL from below script. $ vim script_to_find_and_delete_file.sh $ cd to_your_directory $ bash script_to_find_and_delete_file.sh
Open your favorite editor and create a script as below, Now, lets say you want to search myfile.pdf in a big list of files in a directory, then cd to that directory, copy this script there, and run the script as, $ bash script_to_check_file.sh myfile.pdf
