How do we combine commands in cmd shell language such that the second command is only executed if the first command successfully completed?
something like following bash-command
make && ./a.out
a.out
is only executed if make
was successful
Using a single ampersand (&) will cause the first command and then the second command to be run in sequence. Using double ampersands (&&) introduces error checking. The second command will run only if the first command is successful.
Just use & instead of && . The second command will be executed even if the first one fails.
The following
command1 && command2
should work on cmd
as well. Quote from here:
When using cmd.exe, you can put multiple commands on the same line by using ‘&’ or ‘&&’ between commands. Using a single ampersand (&) will cause the first command and then the second command to be run in sequence. Using double ampersands (&&) introduces error checking. The second command will run only if the first command is successful.
An AND list has the form
command1 && command2
command2 is executed if, and only if, command1 returns an exit status of zero.
An OR list has the form
command1 || command2
command2 is executed if and only if command1 returns a non-zero exit status. The return status of AND and OR lists is the exit status of the last command executed in the list.
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