& Linux Command

Function Description: Lock the virtual terminal. Syntax: vlock&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-ACHV] Supplementary Note: The implementation of Vlock instructions can be locked virtual terminals, to avoid others to use. Parameters:-A or--all lock all terminal stage jobs, if you use this parameter in a full screen terminal, you will switch off the function of keyboard switching terminals ...

Function Description: Display the current login system http://www.aliyun.com/zixun/aggregation/10619.html "> User information." Syntax: w [-fhlsuv][User name] Add: This instruction will tell you who is currently logged on to the system and what programs they are executing. A separate execution of the W directive displays all users, and you can specify the user name and display information about only one user. Parameters: & ...

Function Description: Display the current login system http://www.aliyun.com/zixun/aggregation/10619.html "> User information." Grammar: Who [-himqsw][--help][--version][am i][Records] Supplemental Note: The implementation of this directive can be learned that the current user login system, the individual implementation of the WHO directive will be listed login account, the use of terminals, log in ...

Function Description: First appears the user name. Syntax: whoami&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [--help] [--version] Supplemental Note: Display its own user name, this instruction is equivalent to the implementation of "Id-un" instructions. 　Parameters:--help online Help. --ve ...

Function Description: Declare &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp;shell variable." Syntax: Declare [+/-][rxi][variable name = set value] or DECLARE-F Supplemental description: Declare for Shell directives, in the first syntax can be used to declare variables and set variables ...

Function Description: Analyze the dependencies of the load module. Syntax: depmod&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-ADEISVV] [M < document] [--help] [Module name] Supplemental NOTE: Depmod can detect the dependencies of modules for modprobe to use when installing modules. Parameters:-A or--ALL&N ...

Feature Description: Sets the color of the &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp;ls directive when displaying directories or files. Syntax: dircolors [color profile] or dircolors [-bcp][--help][--version] Supplemental Note: dircolors ...

Function Description: Displays the boot information. Syntax: dmesg&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [CN] [-s < buffer size] Supplemental Note: Kernel will store the boot information in the ring buffer. If you do not have time to check the information on the boot, you can use DMESG to view. Boot information is also stored in the/var/...

Function Description: User account Setup program. Syntax: userconf&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [--addgroup < Group] [--adduser < user id>< Group >< user name ><shell>] [--delgr ...

Function Description: Delete user account. Syntax: userdel&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-R] [User Account] Supplemental Note: Userdel can delete user account and related files. If you do not add a parameter, only the user account is deleted without deleting the associated file. Parameters:-F Deletes the user login directory and all files in the directory.

Feature Description: Sets or displays environment variables. Syntax: export&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-FNP] [Variable name]=[variable set value] Supplemental NOTE: When executing a program in a shell, the shell provides a set of environment variables. Export can add, modify, or delete environment variables for use by subsequent programs. The effect of export only to this landing exercise ...

Function Description: Set up the installed configuration file. Syntax: mkkickstart&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [--BOOTP] [--DHCP] [--nonet] [--nox] [--version] [--nfs < remote computer: path] Supplemental explanation: Mkkickstart can root ...

Function Description: Open the group's projection password. Syntax: Grpconv added: The user and group passwords in the Linux system are stored in the passwd and group files in the ETC directory respectively. Anyone can read them because of the operation of the system, creating a safety flaw. The projection password changes the password within the file to the shadow and Gshadow files in the ETC directory, allowing only the system Manager to read and replace the original password with the "x" character. The function of the projection password can be turned on or off at any time ...

Function Description: http://www.aliyun.com/zixun/aggregation/18860.html "> Automatic processing can load modules. Syntax: modprobe [-acdlrtvv][--help][module file] [Symbol name = symbolic value] Supplemental Note: modprobe can load a specified individual module or load a dependent set of modules. Modprobe will be produced according to Depmod ...

Function Description: Load module. Syntax: insmod&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-FKMPSVXX] [-o < module name] [Module file] [Symbol name = symbolic value] Supplemental explanation: Linux has many functions that are in the form of modules and are loaded kernel when needed. This can make ker ...

Feature Description: Set password. Syntax: passwd&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-DKLS] [-u <-f>] [User name] Supplemental Note: The passwd directive allows the user to change his or her password, and the system administrator can use it to manage the user's password for the system. Only the manager can specify the user name, the general user can only change their password ...

Function Description: Install core load, boot management program. Syntax: lilo&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-CLQTV] [-b< Peripheral Equipment Code [-c< configuration file [-d< Delay Time] [-d< Identification Label [-f< Geometric parameter file [-i<

Function Description: Turn off the user's projection password. Syntax: Pwunconv added: Execute pwunconv instruction can turn off the user projection password, it will be the password from the shadow file, back to the passwd file.

Function Description: Controls the resources of the shell program. Syntax: ulimit&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-ahs] [C <core file upper limit] [-D < data section size] [F < file size] [m < memory size ...

Feature Description: Remove Alias. Syntax: unalias&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-A] [Alias] Supplemental Note: Unalias for Shell built-in directives, you can delete alias settings. Parameters:-a deletes all aliases.