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Today, I would like to share with you the relevant knowledge of how to use the Linux wait command. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article. Let's take a look at it.

The commonly used Linux command wait command is used to wait for the instruction of an instruction until it is returned to the terminal after its execution. This instruction is often used in shell scripting, waiting for the specified instruction to be executed before continuing with subsequent tasks. When this directive waits for a job, the backup number "%" must be added before the job identification number.

Wait returns after waiting for the process to be executed.

Syntax wait (parameter) parameter process or job tag: specify the process number or job number.

The instance uses the command wait to wait for the completion of the job with job number 1 before returning. Enter the following command:

Wait% 1 # waits for the job with job number 3 to finish executing the above instruction, and then outputs the instruction to specify the job number, as shown below:

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