[MySQL] 利用 perl 單行印出 my.cnf

MySQL Performance Blog 裡面發現這篇:How to pretty-print my.cnf with a one-liner,利用一行 perl 指令把 my.cnf 的註解拿掉:
perl -ne 'm/^([^#][^\s=]+)\s*(=.*|)/ && printf("%-35s%s\n", $1, $2)' /etc/my.cnf
輸出為:
[client]
port                               = 3306
socket                             = /tmp/mysql.sock
[mysqld]
port                               = 3306
socket                             = /tmp/mysql.sock
skip-locking
key_buffer                         = 256M
max_allowed_packet                 = 1M
table_cache                        = 256
sort_buffer_size                   = 1M
read_buffer_size                   = 1M
read_rnd_buffer_size               = 4M
myisam_sort_buffer_size            = 64M
thread_cache_size                  = 8
query_cache_size                   = 16M
thread_concurrency                 = 8
log-slow-queries                   = /var/log/mysql/mysql-slow.log
當然同樣的,你也可以利用在 php.ini 或者是其他設定檔上面,提供我平常用 bash 指令來做的,只是沒有經過排版:
cat /usr/local/etc/php.ini | grep -v '^$' | grep -v '^[;]'
上面同樣的把空白行,以及開頭為 ; 的註解拿掉,同樣是可以做到。