执行 history 后你会看到三条重复的条目。要剔除这些重复的条目,你可以将 HISTCONTROL 设置为 ignoredups: # pwd # pwd # pwd # history | tail -4 44 pwd 45 pwd 46 pwd [Note that there are three pwd commands in history, after executing pwd 3
The initialization isn’t complicated; it’s a bunch of function definitions and video setup commands like this: 首先,快速查看grub.cfg文件,了解GRUB如何初始化其菜单和内核选项。 您会发现grub.cfg文件由一系列GRUB命令组成,通常以一系列初始化步骤开始,然后是一系列不同内核和引导配置的菜单条目。 初始化...
By default, the history commands are located at ~/.bash_history. You can view the contents of this file by typing “cat ~/.bash_history” into the terminal.If you want to change the location of this file, you can use the HISTFILE environment variable. For example, if you wanted to st...
1% [3Packages22.9kB/7,415kB0%] [Waitingforheaders] [Waitingforheaders]^C 注意:上面的命令会导致系统整体的改变,所以需要root密码(查看提示符为"#",而不是“$”).和yum命令相比,Apt更高级和智能。 见名知义,apt-cache用来搜索包中是否包含子包mplayer, apt-get用来安装,升级所有的已安装的包到最新版。
{operator="eq";value=1;msg="开启密码符合复杂性要求策略"} # + 强制密码历史 N个记住的密码 "PasswordHistorySize" = @{operator="ge";value=3;msg="强制密码历史N个记住的密码"} # + 账户登录失败锁定阈值N次数"LockoutBadCount" = @{operator="eq";value=6;msg="账户登录失败锁定阈值次数"} # +...
-n 执行history历史中倒数第n个命令 !string 执行前一个以“string”开头的命令 !?string 执行前一个包含string的命令 !string:p 打印前一个以“string”开头的命令,不执行 !^:p 打印输出 !$ (上一条命令的第一个参数)的内容 !$:p 打印输出 !$ (上一条命令的最后一个参数)的内容 !*:p 打印输出 !
history –Display previously used commands within the current terminal session. man –Access help manuals for commands right within the terminal. screen –Manage multiple terminal sessions from a single window. ssh –Establish secure encrypted connections to remote servers. tcpdump –Capture network traf...
Execute the Commands from History using the Index Number In history output, you get the command with theirindex number, which you can use to execute it directly using the"!"as shown below. $ !3 Below is the output of the above command. ...
mv command_list.txt commands/ 要使用绝对路径,请使用: mv /home/wbolt/BestMoviesOfAllTime ./ …where./是您当前所在的目录。 您还可以使用mv重命名文件,同时将其保留在同一目录中: mv old_file.txt new_named_file.txt 9.mkdir命令 要在shell中创建文件夹,可以使用mkdir命令。只需指定新文件夹的名称,确...
Bash history- Network linux commands man page Shell scripting What is Shell? Types of Shell? Scripts and Shell info Variables in Shell programming Predifined variables (environement variables) User defined variables variables name variable scopes Variable substitution Command substitution Command Line ...