What is the difference between && and ; in bash or command?
Eg:
~$ echo one && echo two
And
~$ echo one ; echo two
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问题:
回答1:
~$ echo one && echo two
This runs the 2. command only if the first command succeeds.
~$ echo one ; echo two
This always runs the 2. command.
~$ echo one || echo two
This runs the 2. command only if the first command fails.
A command is considered successful if its exit code is 0, and considered failed if its exit code is != 0.
