Running Multiple Linux Commands Simultaneously

Efficiently execute multiple Linux commands to improve your efficiency and productivity! This article will guide you on how to run multiple Linux commands in one line of commands, and even how to automate repetitive tasks.

Basic knowledge

Before learning advanced techniques, you need to be familiar with the command line or terminal – powerful Linux tools. Here you can perform tasks by typing a series of commands. While it may seem daunting at first, learning to use it opens a new realm of efficiency and productivity.

Continuously run commands

If you want to run multiple commands in succession, i.e., after the previous command is completed and then the next command is run, use a semicolon (;). For example, command1 ; command2 ; command3 will execute command1 , wait for it to complete, then execute command2 , and so on.

Execute commands in parallel

To run commands simultaneously or in parallel, use the & number (&). However, remember that using the And number will send the process to the background, allowing the next command to start immediately. For example, command1 & command2 will execute command1 and command2 at the same time.

Use logical operators

You can also use logical operators (&& and ||) to run commands based on success or failure of the previous command. The && operator will execute the next command when the previous command succeeds. For example, command1 && command2 will only execute command2 when command1 succeeds. Instead, the || operator executes the next command only if the previous command fails.

Command grouping

If you have a set of commands to be executed in a specific order, you can use brackets. For example, (command1 ; command2) & command3 will run command1 and command2 at the same time, but command3 will only be started after both commands are completed.

Using command line pipelines

Pipeline is a very useful tool when you want to use the output of one command as input to another. You can use vertical bars (|) to achieve this. For example, command1 | command2 will pass the output of command1 as input to command2 .

Automated repetitive tasks

If you often execute a specific set of commands, you can write a simple bash script to automate this process. You just need to write the command to a text file and save it as a .sh extension. For example, you could create a file named 'myscript.sh' and write it to:

 #!/bin/bash

command1

command2

command3

Then, run chmod x myscript.sh to make the script executable and execute it with ./myscript.sh .

Summarize

Mastering the skills to execute multiple Linux commands simultaneously can save a lot of time and greatly improve your productivity. By understanding semicolons, sums, logical operators, brackets, pipelines, and bash scripts, you will be able to use the terminal more efficiently and more powerfully.

The above is the detailed content of Running Multiple Linux Commands Simultaneously. For more information, please follow other related articles on the PHP Chinese website!