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E: cocould not get lock/var/lib/APT/lists/lock-open (11: Resource temporarily unavailable) This problem may occur because another program is running and the resource is locked and unavailable. The reason for the resource being locked may be that the last installation was not completed properly, resulting in this situation. Solution: Enter the following command. Sudo RM/var/Cache/APT/archives/lock Sudo RM/

As we all know, using echo and cooperating with command redirection is a shortcut that implements writing information to a file. This article describes how to use the echo command with the sudo command.implementations write information to files that only the system administrator has permission to do. For example, to write to the Test.asc file random content, you can: $ echo "info" > test.asc# or echo "Information" >> TEST.ASC below, if the TEST.ASC pe

Release date:Updated on: Affected Systems:Todd Miller Sudo 1.6.9-1.8.4p5Description:--------------------------------------------------------------------------------Bugtraq id: 65997CVE (CAN) ID: CVE-2014-0106 Sudo is a tool that allows system administrators to allow common users to execute some or all of the root commands, reducing the login and management time of root users and improving security. After

Execute the following command on javastuserver. The default number of opened files is 1024. $ Ulimit-n1024 edit the/etc/profile and add the last line: ulimit-SHn65535 to make the configuration take effect: $ sudosource/etc/profilesudo: source: commandnotfound we run ulimit-SHn directly Run the following command on Ubuntu Server. The default number of opened files is 1024. $ Ulimit-n 1024 Edit the/etc/profile configuration file and add the last line: Ulimit-SHn 65535 To make the configurati

First look at what ulimit is: submit :... First Look what ulimit is: http://baike.baidu.com/view/4832100.htm In linux, you can use ulimit to modify the maximum number of files simultaneously opened by a process. However, if your account is not a root account, but has sudo permissions Sudo ulimit-n 65535 When you encounter: sudo: ulimit: command not found The caus

Su-user name does not add minus sign environment variable does not switchWHOAMI View Current User su - -c “mkdir /tmp/file” 用户名 With the-C option, you can execute commands without switching users sudo temporarily has some permissions to use sudo to temporarily have root privileges without knowing the root password for the normal account, which is for security purposes and cannot be logged o

Action object: System commandRoot can only be used by Super User command to give ordinary users executeHow to use: #visudo#实际修改的是/etc/sudousers file (man 5 sudousers view command format notation)Root all= (All) allUser name Managed address = (can use Identity) Authorization command (absolute path)#%wheel all= (All) allGroup name Managed address = (can use Identity) Authorization command (absolute path)Example 1: The authorized SC user can restart the machineSu All=/sbin/shutdown-r now(such as qu

When the machine hundreds of thousands of times, if you need to use a machine inside a password or key to login, it is also a painful thing, today sharing under the use of OPENLDAP to achieve an account of any machine and applications can log on.I. OPENLDAP installation and Configuration1. Install dependent packages and software installationYum install-y openldap openldap-servers openldap-clients openldap-devel2. configuration file ConfigurationCp/usr/share/openldap-servers/slapd.conf.obsolete/e

Debian installation using the sudo commandsudo allows the non-root user to have administrator privileges, the installation of Debian can not use sudo, you need to use the root user login and install the sudo command.#apt-get install sudoOnce installed, you can set up administrator privileges for your account.#vim /etc/sudoersAdd a row username all= (all) all #这里的

PHP gets ifconfig eth0 down permissions via sudo I have already opened a lot of posts, I really can not achieve the hope that the great God to guide anything, even if it is the information of PHP sudo access to the right online is really not reliable AH ------Solution-------------------- I am: sudo gedit/etc/sudoers modified without

Sudo introduction:Sudo is a common tool in Linux that allows common users to use superuser permissions;Sudo features:Configuration file:Editing method: Vim; mongodo (this can check whether the configuration is correct)Sudo mainly includes four alias settings {Here, the master host_alias # host alias allows access from that host, for example, 192.168.1.1Determine

Author: gnuhpcSource: http://www.cnblogs.com/gnuhpc/ The most widely spread Chinese Blog posts on the Internet about this operation are very evil. For example ...... In fact, the idea is the same, mainly to edit/etc/sudoers: $ Sudo multiple do Add a line in the table. If you want to enable a user sudo without entering a password, it will start with the user name. If you want a group to have this privile

Ubuntu sudo does not need to enter the password, except tusudo Run the following command: Sudo shortdo Add a line in the table. If you want to enable a user sudo without entering a password, it will start with the user name. If you want a group to have this privilege, it will start with % group name. For example: Zhuhui ALL = NOPASSWD: ALLIndicates that the u

Ubuntu sudo update and the role and difference of upgradeThe Beginner Linux comrades, at the beginning of the most urgent to know, about one is the Chinese input method, the other is how to install software. This article mainly describes the Linux installation software features.Under Windows to install the software, we only need to have EXE file, and then double-click, the next step directly OK. But under Linux, that's not the case. Every Linux distri

Sudo is a very useful tool on the Unix/linux platform that allows system administrators to assign a reasonable "power" to ordinary users to perform tasks that only superuser or other privileged users can accomplish (mainly as commands), such as running some like Mount,halt, Commands such as Su,useradd, Userdel, or edit some system configuration files, such as/etc/mtab,/etc/samba/smb.conf, etc. This has not only reduced the number of logins and adminis

/bin/ The decentralized binary commands are available to ordinary usersSbin the decentralized binary commands are superuser root can use theordinary users also want to use Sbin the files below can be used via sudo to achieve:The default normal user is not allowed to use:Tip: Not enough permissionsConfigure a single user to have rights to a command or serviceThe system default IQF package has been installed to view under:Perform[email protected] ~]# Vi

Su-#su-oldboy//When executing this command, switch to Oldboy user, and re-read the user environment-related configuration file, specifically to execute under the user home directory. Bash_profile and. bashrc files, this we become the full switch su#su Oldboy//execute this command when the system does not read the above two files, so we generally call it a half switch, so that after the switch over, Oldboy users still use the previous user's environment configuration informationsudo#

Problem Description:I created the test user through Useradd test and created the directory for that user through mkdir test, and then Chown-r test/home/test the directory and its subdirectory permissions to the test user.I then switched to the user via the SU Test command, and installed the relevant software using the sudo apt-get install command, but reported the following information:Test is not in the sudoers file. This incident'll be reportedOf c

In Linux, when we need to execute a command with the root permission, every time we have to Su to the root, is it always inconvenient? We can replace it with sudo. Fedora10 by default, the new user is not in The sudo group, but the/etc/sudoers file can be edited to add normal usersSudo Group. Note that only the mongodo command can be used to modify the file: 1. First switch to root# Su-(Note that-This is di

Use and introduction of linux su and sudo commands, and use of susudo commands Function Su: Switch users. Sudo: enables other users to do (do) What the root user can do (first, the user must be granted the sudo permission) Su usage Su: switch to the root user without changing the current working directory. Environment Variable change Su-: switch to the root