Perl 呼叫外部程式命令差異

Exp1.

system("/usr/local/share/ca-certificates/; sudo update-ca-certificates; sudo systemctl restart docker.service");

Exp2.

system("sh", "script.sh", "--help" );

Exp3.

system("sh script.sh --help");

Exp1.

exec("vi abc.txt");

Exp1. $cmd_msg 內就是回傳執行的結果

 $cmd_msg = `ls -l`;

Exp2. 搭配 2>&1 可讓所有訊息都導回來

 $cmd_msg = `sudo apt update -y 2>&1`;

Exp3. 也可使用 qx/ / 語法

 $cmd_msg = qx/script.sh --option/;

https://stackoverflow.com/questions/3200801/how-can-i-call-a-shell-command-in-my-perl-script