Execute two or more commands sequentially
To execute two or more command sequentially regardless of the failure/success of the previous,
usage: $ command1; command2
command2 will execute after completing command1 .
Execute the second command only if the first command fails
usage: $ command1 || command2
command2 will be executed if command1 fails s (if command1 is successful command2 won't be run). logical OR operation.
Executing the second command only if the first is successful
usage: $ command1 && command2
command2 will be executed if command1 successfully completes (if command1 fails command2 won't be run). logical AND operation.
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