How to run multiple commands at the time in Linux | 7Hills


 By using multiple commands helped to save time and to get desire output, to run multiples at the same time we need to some operators like semicolon(;),

Semicolon (;) operator

Used to execute multiple commands - regardless of whether each previews command succeed.

Example, we can command executed without any issue.

In the below image LS command failed to execute and ignored, successfully executed next commands.






Logical AND Operator(&&)

If you want the second command to only run if the first command is successful

Example : In the below image observation we can see that first command execution failed and second command not execution also not happened.






In the below observation we can see that first & second command executed successfully, it means that if first command executed then only second command will execute.








Logical OR operator (||)

sometimes you might want to execute a second command only if the first command does not succeed.

In the below image we can observe that first command not executed but second executed without depending on the first command.








Using above tree logical operators we can run multiple commands at the same time.

Watch Run multiple commands at the time - Linux video



Read Linux Vs Windows.

https://allinonedo.blogspot.com/2021/01/linux-vs-windows-compare-linux-vs.html


Comments

Post a Comment

Popular posts from this blog

Awk command with simple examples

Image
Now, we are going to learn very interesting and Most important  in  Linux Why late lets know about Awk command,one of the mostly used command in scripting. awk command used to manipulate data | using this AWK command we can generate specified reports as per our requirement. Syntax : awk ‘BEGIN {start_action} {action} END {stop_action}’ filename let me explain about awk command with simple examples Example 1: How to print entire   data of the file cat filename | awk '{print}' cat filename | awk '{print$0}' both " awk '{print}' and  awk '{print$0}'  " used to print entire date Example 2: How to print  very first column cat filename|  awk '{print$1}' awk '{print$1}'  used to print very first column   awk '{print$1}'   used to print second column   Example 3: How to print p attern Matching Technique in Awk. free -m | awk '{/Mem/print}' here, we are matching Mem using  awk '{/Mem/p...
Read more

Learn Linux in Telugu | Linux complete Free Course in Telugu by 7Hills

               Hello, Here we are going to learn complete Linux course freely & Simply way. Why Linux?                   Linux is an heart the operating system,   Based on the Linux Kernel their are different types of Linux flavors available i.e.. RedHat, Centos, Fedora, Mint Debian, Kali, OpenSUSE...etc Features of Linux Open source. Multi-user. Multitasking. Hierarchical file system. Portable. Wide hardware support. No need to worry, we explained each and every topic clearly just click on the below links for watch on Youtube.   1.       Linux outline in Telugu 2.       Linux introduction In Telugu 3.       Linux architecture In Telugu 4.       Linux Directory Structure In Telugu 5.       Linux Basic Commands In Telugu 6.    ...
Read more

rsync Command Examples | rsync Command In Telugu

Image
Hey! Well come back! Here, we are going to learn very useful command rsync. basically rsync is used to sync file system with same structure. It also used to data backup/copy. rsync is free command line utility & In most of the system it available defiantly. We can install rsync utility in debian based system using below command apt-get install rsync We can install rsync utility in redhat based system using below command yum install rsync Below command used to copy files without using option rsync /root/Desktop/original/* /root/Desktop/backup/ Below command used for recursive copy, it means with sub folders. rsync -avhr /root/Desktop/original/* /root/Desktop/backup/ Here     -a is used for archive data.     -v is used for show output.     -h is used for show copied data in MB's,it means human              readable  format. Below command used for include or exclude  rsync -avz --include ...
Read more