06 2016 档案

在top命令下kill和renice进程
摘要：For common process management tasks, top is so great because it gives an overview of the most active processes currently running (hence the name top). 阅读全文

posted @ 2016-06-29 11:01 遠離塵世の方舟 阅读(750) 评论(0) 推荐(0)

Sending Signals to Processes with kill, killall, and pkill
摘要：The Linux kernel allows many signals to be sent to processes. Use man 7 signals for a complete overview of all the available signals. Three of these s 阅读全文

posted @ 2016-06-29 10:55 遠離塵世の方舟 阅读(527) 评论(0) 推荐(0)

使用nice命令调整进程优先级
摘要：Adjusting Process Priority with nice When Linux processes are started, they are started with a specific priority. By default, all regular processes ar 阅读全文

posted @ 2016-06-28 16:48 遠離塵世の方舟 阅读(1326) 评论(0) 推荐(0)

几个常用的ps命令
摘要：1. ps aux If you are looking for a short summary of the active processes, use ps aux 2. ps -ef If you are not only looking for the name of the process 阅读全文

posted @ 2016-06-28 15:33 遠離塵世の方舟 阅读(311) 评论(0) 推荐(0)

linux nohup命令
摘要：nohup 命令 用途：不挂断地运行命令。如果你正在执行一个job，并且你希望在退出帐户/关闭终端之后继续运行，可以使用nohup命令。nohup就是不挂起的意思( no hang up)。 语法：nohup Command [ Arg … ] [　& ] 描述：nohup 命令运行由 Comman 阅读全文

posted @ 2016-06-28 11:35 遠離塵世の方舟 阅读(2358) 评论(0) 推荐(0)

Managing linux Shell Jobs
摘要：Managing Shell Jobs When moving jobs between the foreground and background, it may be useful to have an overview of all current jobs. To get such an o 阅读全文

posted @ 2016-06-28 10:15 遠離塵世の方舟 阅读(365) 评论(0) 推荐(0)

Configuring Network Configuration-RHEL7
摘要：1、查看网络状态systemctl status NetworkManager You can use the systemctl status NetworkManager command to verify its current status. When NetworkManager come 阅读全文

posted @ 2016-06-27 16:57 遠離塵世の方舟 阅读(1338) 评论(0) 推荐(0)

linux 网络状态工具ss命令
摘要：ss命令用于显示socket状态. 他可以显示PACKET sockets, TCP sockets, UDP sockets, DCCP sockets, RAW sockets, Unix domain sockets等等统计. 它比其他工具展示等多tcp和state信息. 它是一个非常实用、快速、有效的跟踪IP连接和sockets的新工具.SS命令可以提供如下信息： 所有的TCP sock... 阅读全文

posted @ 2016-06-24 17:35 遠離塵世の方舟 阅读(456) 评论(0) 推荐(0)

RHEL7查看网卡配置命令ip addr show
摘要：Validating Network Address Configuration To verify the configuration of the network address, you need to use the ip utility. The ip utility is a moder 阅读全文

posted @ 2016-06-24 16:17 遠離塵世の方舟 阅读(12515) 评论(0) 推荐(0)

chmod -R o+rX /data
摘要：When using chmod -R o+rx /data , you set the execute permission on all directories as well as files in the /data directory. To set the execute permission to directories only, and not to files, use ... 阅读全文

posted @ 2016-06-24 10:09 遠離塵世の方舟 阅读(1004) 评论(0) 推荐(0)

linux命令chown修改文件所有权
摘要：Changing User Ownership To apply appropriate permissions, the first thing to consider is ownership. To do this, there is the chown command. The syntax 阅读全文

posted @ 2016-06-23 17:23 遠離塵世の方舟 阅读(811) 评论(0) 推荐(0)

linux groupmems命令
摘要：Because users group membership is defined in two different locations, it can be difficult to find out which groups exactly a user is a member of. A co 阅读全文

posted @ 2016-06-23 15:03 遠離塵世の方舟 阅读(1777) 评论(0) 推荐(0)

linux系统中中断已连接的用户
摘要：1、用w命令查看当前系统登录的用户 USER —登录的用户名TTY —登录后系统分配的终端号FROM—远程主机名，即从哪儿登录来的LOGIN@—何时登录IDLE—空闲了多长时间，表示用户闲置的时间。这是一个计时器，一旦用户执行任何操作，该计时器便会被重置JCPU—和该终端（tty）连接的所有进程占用 阅读全文

posted @ 2016-06-21 19:19 遠離塵世の方舟 阅读(2719) 评论(0) 推荐(0)

linux系统用户锁定与解锁
摘要：1、使用passwd命令锁定与解锁账号 2、使用usermod命令锁定与解锁账号 阅读全文

posted @ 2016-06-21 14:46 遠離塵世の方舟 阅读(50272) 评论(0) 推荐(2)

passwd命令限制用户密码到期时间
摘要：1.passwd命令 2.chage -l命令 Showing Password Expiry Information with chage -l 如果时间小于（Minimum number of days between password change : 3），则不允许修改密码。 阅读全文

posted @ 2016-06-21 14:44 遠離塵世の方舟 阅读(2633) 评论(0) 推荐(0)

与useradd命令相关的两个默认配置文件
摘要：Configuration Files for User Management Defaults When working with tools as useradd, some default values are assumed. These default values are set in 阅读全文

posted @ 2016-06-17 14:51 遠離塵世の方舟 阅读(471) 评论(0) 推荐(0)

vipw和vigr命令
摘要：Modifying the Configuration Files To add user accounts, it suffices that one line is added to /etc/passwd and another line is added to /etc/shadow, in 阅读全文

posted @ 2016-06-17 11:00 遠離塵世の方舟 阅读(2333) 评论(0) 推荐(0)

linux sudo命令
摘要：sudo Instead of using the root user account, unprivileged users can be configured for using administrator permissions on specific tasks by using sudo. 阅读全文

posted @ 2016-06-16 16:27 遠離塵世の方舟 阅读(929) 评论(0) 推荐(0)

linux中切换用户方式su和su -的区别
摘要：Using su The su command allows users to open a terminal window, and from that terminal start a sub shell in which the user has another identity. To perform administrative tasks, for insta... 阅读全文

posted @ 2016-06-16 16:20 遠離塵世の方舟 阅读(548) 评论(0) 推荐(0)

ls Common Command-Line Options
摘要：ls Common Command-Line Options Command Use： ls -l Shows a long listing, which includes information about file properties, such as creation date and permissions. ls -a Shows all fil... 阅读全文

posted @ 2016-06-16 16:10 遠離塵世の方舟 阅读(253) 评论(0) 推荐(0)

Counting Lines, Words, and Characters with wc
摘要：Counting Lines, Words, and Characters with wc When working with text files, you sometimes get a large amount of output. Before deciding which approach 阅读全文

posted @ 2016-06-16 15:08 遠離塵世の方舟 阅读(303) 评论(0) 推荐(0)

Sorting File Contents and Output with sort
摘要：Sorting File Contents and Output with sort Another very useful command to use on text file is sort . As you can probably guess, this command sorts tex 阅读全文

posted @ 2016-06-16 11:14 遠離塵世の方舟 阅读(240) 评论(0) 推荐(0)

Filtering Specific Columns with cut
摘要：Filtering Specific Columns with cut When working with text files, it can be useful to filter out specific fields. Imagine that you need to see a list 阅读全文

posted @ 2016-06-16 10:51 遠離塵世の方舟 阅读(205) 评论(0) 推荐(0)

tail和head命令
摘要：[root@rhel7 ~]# cat rusky --cat命令查看文件内容 line1 line2 line3 line4 line5 line6 line7 line8 line9 line10 [root@rhel7 ~]# tail -n 3 rusky --查看最后3行内容 line8 line9 line10 [root@rhel7 ~]# tail -3 rusky ... 阅读全文

posted @ 2016-06-16 10:33 遠離塵世の方舟 阅读(1178) 评论(0) 推荐(0)

wildcard
摘要：[rusky@rhel7 test]$ lstest1 test123 test2 test317 test33 test335 test336 test44 testtest[rusky@rhel7 test]$ ls test?3test33[rusky@rhel7 test]$ ls test??3test123[rusky@rhel7 test]$ ls test... 阅读全文

posted @ 2016-06-15 16:04 遠離塵世の方舟 阅读(166) 评论(0) 推荐(0)

mount, findmnt,df命令
摘要：■ The mount command gives an overview of all mounted devices. To get this information, the /proc/mounts file is read, where the kernel keeps informati 阅读全文

posted @ 2016-06-15 15:27 遠離塵世の方舟 阅读(453) 评论(0) 推荐(0)

/etc/motd and /etc/issue
摘要：/etc/motd and /etc/issue Bash offers an option to include messages in the /etc/motd and the /etc/issue files. Messages in /etc/motd display after a us 阅读全文

posted @ 2016-06-15 11:21 遠離塵世の方舟 阅读(307) 评论(0) 推荐(0)

Environment Configuration Files
摘要：Environment Configuration Files When a user logs in, an environment is created for that user automatically. This happens based on four different files 阅读全文

posted @ 2016-06-15 10:41 遠離塵世の方舟 阅读(185) 评论(0) 推荐(0)

-bash: ulimit: open files: cannot modify limit: Operation not permitted
摘要：普通用户登录系统报错，提示： -bash: ulimit: open files: cannot modify limit: Operation not permitted. 处理方法： #vi /etc/ssh/sshd_config --使用root账号修改UseLoin 为yes UseLog 阅读全文

posted @ 2016-06-06 14:39 遠離塵世の方舟 阅读(11806) 评论(0) 推荐(0)

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