我正在运行以下sed命令来编辑my.cnf带有特定参数的 a。然而，它到达了我需要检查和修改的最后两个值，尽管语法与之前修改过的值没有什么不同，但仍然无法执行它们。
sed -i s/".*old_passwords=[0-9]*"/"# old_passwords=1"/g /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/innodb_buffer_pool_size=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\old_passwords=/ainnodb_buffer_pool_size=5G' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/innodb_additional_mem_pool_size=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\innodb_buffer_pool_size=/ainnodb_additional_mem_pool_size=100M' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/innodb_file_per_table/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\innodb_additional_mem_pool_size=/ainnodb_file_per_table' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/innodb_log_file_size=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\innodb_file_per_table/ainnodb_log_file_size=125M' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/innodb_flush_log_at_trx_commit=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\innodb_log_file_size=/ainnodb_flush_log_at_trx_commit=1' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/max_connections=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\innodb_flush_log_at_trx_commit=/amax_connections=500' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/query_cache_size=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\max_connections=/aquery_cache_size=256M' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/query_cache_type=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\query_cache_size=/aquery_cache_type=0' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/query_cache_limit=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\query_cache_type=/aquery_cache_limit=1M' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/table_cache=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\query_cache_limit=/atable_cache=256' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/thread_cache_size=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\table_cache=/athread_cache_size=4' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/innodb_flush_method=/d' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
sed -i '/\thread_cache_size=/ainnodb_flush_method=O_DIRECT' /home/david/systems/zabbix/2.2/2.2.5/confs/my.cnf
我需要检查和设置的最后两个值是：
thread_cache_size=4
innodb_flush_method=O_DIRECT
我正在针对一个非常标准的 my.cnf 文件运行它：
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
max_connections=500
innodb_buffer_pool_size=256M
# Disabling symbolic-links is recommended to prevent assorted security risks;
# to do so, uncomment this line:
# symbolic-links=0
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
生成的文件如下所示：
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
# old_passwords=1
innodb_buffer_pool_size=5G
innodb_additional_mem_pool_size=100M
innodb_file_per_table
innodb_log_file_size=125M
innodb_flush_log_at_trx_commit=1
max_connections=500
query_cache_size=256M
query_cache_type=0
query_cache_limit=1M
table_cache=256
# Disabling symbolic-links is recommended to prevent assorted security risks;
# to do so, uncomment this line:
# symbolic-links=0
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
我已经尝试删除 thread_cache_size= 命令并替换为其他随机的命令，这些命令可以进一步发挥作用，但仍然失败，就好像它对 my.cnf 文件的编辑范围有一些限制。