The ls command along with its -l shows the metadata including the permissions of the file. $ ls -l In Linux, file and folder permissions are represented by a string of ten characters. Where the first character represents the file type, “-” for a file or “d” for a directory. The ...
o Guess the name from the output of the dmesg command (which prints the last few kernel messages) or the kernel system log file (see 7.2 System Logging). This output might contain a description of the devices on your system. o For a disk device that is already visible to the system, ...
command [-option] [arg1] [arg2] ... ``` 其中,“command” 是要执行的命令,“-option” 是可选的选项,“arg1”、“arg2” 等则是命令的参数。 例如,要查看当前目录下的文件列表,可以使用以下命令: ``` ls ``` 如果要查看详细的文件信息,可以添加“-l”选项: ``` ls -l ``` ## 常用命令 ...
man配置文件:/etc/man.config(centos6) | /etc/man_db.conf (CentOS7) man环境变量:指明man文件搜索位置 MANPATH /PATH/TO/SOMEWHERE | MANDATORY_MANPATH /PATH/TO/SOMEWHERE (CentOS7) man -M /PATH/TO/SOMEWHERE COMMAND # 到指定位置下搜索COMMAND命令的手册页并显示 man手册中的段落说明: NAME 名称及简...
保留文件不被覆盖; -w:确认压缩文件的正确性; -p或--same-permissions:用原来的文件权限还原文件; -P或--absolute-names:文件名使用绝对名称,不移除文件名称前的“/”号; -N <日期格式> 或 --newer=<日期时间>:只将较指定日期更新的文件保存到备份文件里; --exclude=<范本样式>:排除符合范本样式的文件。
sudo mount -o [options] -t nfs ip_address:share directory_to_mount 编写脚本,写入想执行的命令。可以是/bin/bash或C语言等脚本 例子: C语言脚本 #include<unistd.h>voidmain(){setuid(0);setgid(0);system("/bin/bash");} python脚本 /usr/bin/python3importosimportsystry:os.system("/bin/bash...
dd if=input_file of=output_file bs=block_size 60. sudo:以超级用户权限运行命令 sudo command_to_run_as_superuser sudo命令允许普通用户执行需要超级用户权限的命令,前提是他们在sudoers文件中有相应的权限。这是确保系统安全性的关键工具,要谨慎使用。
10. find: This command is used to search for files and directories based on various criteria such as name, size, or modification date. 11. chmod: This command is used to change the permissions of a file or directory. 12. chown: This command is used to change the owner of a file or...
## This file must be edited with the 'visudo' command. ## 该文件必须使用"visudo"命令编辑 ## Host Aliases #主机别名 ## Groups of machines. You may prefer to use hostnames (perhap using ## wildcards for entire domains) or IP addresses instead. ...
alias - Creates an alias for a command. If options aren't specified it will show all aliases. allneeded - Forces the calculation of all fonts that are needed to preview a set of dvi files. alloc - Shows how much memory is used and free. anacron - Runs commands periodically. answer -...