如何复制没有权限的文件加。mysql的data文件夹不能复制

代码:

     sudo cp /usr/share/doc/mysql-server-5.1/examples/my-large.cnf.gz /etc/mysql/
     cd /etc/mysql/
     sudo gzip -d my-large.cnf.gz
     sudo cp my.cnf my.cnf.bk
     sudo service mysql restart //确认mysql还活着
     mysql -u root -p           //真的活着,然后退出crtl+d
     sudo cp my-large.cnf my.cnf
     sudo service mysql stop
     sudo service mysql start   //悲剧了。

代码:

     sudo cp my.cnf.bk my.cnf
     sudo service mysql start   //依旧悲剧，mysql再也启动不起来了（无任何mysql相关错误日志），可使用mysqld_safe启动。

代码:

   ［mysqld］
    user            = mysql

代码:

/etc/init.d$ ls -l|grep mysql
lrwxrwxrwx 1 root root   21 2010-05-06 22:38 mysql -> /lib/init/upstart-job

代码:

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# MySQL Service

description     "MySQL Server"
author          "Mario Limonciello <[email protected]>"

start on (net-device-up
          and local-filesystems)
stop on runlevel [016]

respawn

env HOME=/etc/mysql
umask 007

pre-start script
    #Sanity checks
    [ -r $HOME/my.cnf ]
    [ -d /var/run/mysqld ] || install -m 755 -o mysql -g root -d /var/run/mysqld
    LC_ALL=C BLOCKSIZE= df --portability /var/lib/mysql/. | tail -n 1 | awk '{ exit ($4<4096) }'
end script

exec /usr/sbin/mysqld

post-start script
    while ! /usr/bin/mysqladmin --defaults-file=$HOME/debian.cnf ping
    do
        sleep 1
    done
    exec $HOME/debian-start
end script
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代码:

###################################
#!/bin/bash
#
# This script is executed by "/etc/init.d/mysql" on every (re)start.
#
# Changes to this file will be preserved when updating the Debian package.
#

source /usr/share/mysql/debian-start.inc.sh

MYSQL="/usr/bin/mysql --defaults-file=/etc/mysql/debian.cnf"
MYADMIN="/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf"
MYUPGRADE="/usr/bin/mysql_upgrade --defaults-extra-file=/etc/mysql/debian.cnf"
MYCHECK="/usr/bin/mysqlcheck --defaults-file=/etc/mysql/debian.cnf"
MYCHECK_SUBJECT="WARNING: mysqlcheck has found corrupt tables"
MYCHECK_PARAMS="--all-databases --fast --silent"
MYCHECK_RCPT="root"

# The following commands should be run when the server is up but in background
# where they do not block the server start and in one shell instance so that
# they run sequentially. They are supposed not to echo anything to stdout.
# If you want to disable the check for crashed tables comment
# "check_for_crashed_tables" out. 
# (There may be no output to stdout inside the background process!)
echo "Checking for corrupt, not cleanly closed and upgrade needing tables."
(
  upgrade_system_tables_if_necessary;
  check_root_accounts;
  check_for_crashed_tables;
) >&2 &

exit 0
####################################

代码:

/etc/mysql$ sudo service mysql status
mysql respawn/post-start, (post-start) process 1010

代码:

ps -aux|grep 1010
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
root      1010  0.3  0.1   4088   588 ?        Ss   17:41   0:00 /bin/sh -e /proc/self/fd/11
steam     1110  0.0  0.1   7616   904 pts/0    S+   17:41   0:00 grep --color=auto 1010