Connector in Shell

(1) Command1;command2

Use ";" , the Command2 is executed regardless of whether the Command1 executes successfully.

(2) Command1 && Command2

When you use &&, Command2 is executed only if Command1 executes successfully, otherwise Command2 does not execute.

(3command1 | | command2

Use "| |" , Command1 execution succeeds, do not execute Command2, otherwise will execute Command2, in short Command1 and Command2 always have one to execute

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Connector in Shell