好文: 一行指令 格式化 印出 設定檔(my.cnf)

一行 Perl 的命令, 格式化印出 my.cnf 檔, 同樣做法, 也可以用在其它 conf file.(ex: php.ini)

指令

• perl -ne 'm/^([^#][^\s=]+)\s*(=.*|)/ && printf("%-35s%s\n", $1, $2)' /etc/mysql/my.cnf

執行結果

• [client]
• port                               = 3306
• socket                             = /var/run/mysqld/mysqld.sock
• [mysqld_safe]
• socket                             = /var/run/mysqld/mysqld.sock
• nice                               = 0
• [mysqld]
• user                               = mysql
• pid-file                           = /var/run/mysqld/mysqld.pid
• socket                             = /var/run/mysqld/mysqld.sock
• port                               = 3306

原文可見: How to pretty-print my.cnf with a one-liner