“Bash Combine Exit Command и коды выхода для создания быстрой логики” Ответ

Bash Combine Exit Command и коды выхода для создания быстрой логики

$ my_command && echo "Done" || echo "Failed"
$ /usr/bin/rsnapshot daily && echo "Backup successful" || echo "Backup failed. Alerting OPS team..."
$ mkdir /opt/kernel && cd $_ && echo "Directory created and you are in $PWD"