How to run multiple Linux commands at once

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How to Run Multiple Linux Commands at Once

You can run multiple Linux commands at once using various methods. Here are some common ways to do it:

1. Using a semicolon (`;`):

Code:

command1 ; command2 ; command3

Example:

Code:

ls -l ; pwd ; echo "Hello, World!"

2. Using double ampersand (`&&`):

Code:

command1 && command2 && command3

Example:

Code:

make && sudo make install

In this example, `sudo make install` will only be executed if `make` is successful.

3. Using double pipe (`||`):

Code:

command1 || command2 || command3

Example:

Code:

rm non_existent_file || echo "The file doesn't exist."

In this example, if the file `non_existent_file` doesn't exist, the second command (`echo`) will be executed.

4. Using parentheses `()` and ampersand `&` for parallel execution:

Code:

(command1 ; command2 ; command3) &

Example:

Code:

(sleep 5 ; echo "Process completed") &

In this example, the `sleep` command will run for 5 seconds in the background, and then the message will be printed.

5. Using the `eval` command:

Code:

eval "command1; command2; command3"

Example:

Code:

eval "echo 'Hello,' && echo 'World!'"