Linux batch set user disk quota

Setting rules: 1. each user can store up to 20 MB of files, and can create up to 200 files. 2. warn users when creating files larger than 100 MB and more than files. 3. because some users have exceeded the above restrictions, we must first use an

How to mount a new virtual disk in linux

When the disk resources allocated to the virtual machine are insufficient, you need to add a new virtual disk. The following is the mounting procedure, which has been verified: 1. When the instance is shut down, add a disk as needed. 2. View disk #

How to install flash plug-in linux

Download forlinuxflash and decompress tar.zip in step 1 of the Flash plug-in on the Linux system to obtain the libflashplayer. so file and usr directory. 3. if your linux Browser is firefox, you only need to copy the libflashplayer. so file

Linux-file attributes and permissions

Ls-display file attributes: ([OPTION]... [FILE]...) permission Description: file type: if it is [d], it is a directory; if it is [-], it is a file; if it is [l], it is represented as a link file ); if it is [B], it indicates that it is available for

Plug-in storage in Linux

Take server 41 as an example. use SSH to ACCESS Linux. 10.117.10.41/1231231. first, go to the database and execute the command to start the database to check whether the database can be started normally. Generally, the database cannot be started

How to add a gateway in linux

How to add gateway in linux: how to add gateway temporarily routeadddefaultgwip delete routedeldefaultwww.2cto.com permanent add method modify/etc/rc. local add command in File: routeadddefaultgwip restarts Nic or machine takes effect author

One linux command per day-chmod

The function of chmodchmod (changemode) of a linux command per day is to change the file or directory permissions. Chmod -- help can be used to view specific parameters. Www.2cto.com 1. permission 1. linux has general and special permissions.

Linux port command

LINUX network performance management tool sanjianke this article describes how to manage Linux to view the output information of the port. this command will display the outgoing headers from each packet and the address of port 80 from the host

Find a linux command every day

The main function of the find command is to find files or directories in the system. The common form of the find command is: findpathname-options [-print-exec-OK] print: outputs matching files to the standard output, which is the standard output by

Maximum number of files opened by linux users

[Toomanyopenfiles] is reported in the product Today. the related knowledge is as follows. View the maximum number of files allowed to be opened by the system # cat/proc/sys/fs/file-max view the maximum number of files allowed to be opened by each

Echo of a linux command every day

The echoecho command of a linux command per day is used to display text or variables. the default output is the terminal screen. Echohelloworld outputs helloworld on the screen. Echo-nuser: output user on the screen without line breaks. Www.2cto.

Linuxcpu monitoring command

The linuxcpu monitoring command has been used to monitor cpu usage before, and it is difficult to see single-core performance when detecting multiple cores. Use the command Java code mpstat-PALL15www.2cto.com, 1 indicates 1 second refresh once, 5

Install Swftool on linux and convert PDF files into swf files that can be viewed online

And then use the following steps to install. 1. first, upload the software to the opt/software Directory through SSH software... Install Swftool in linux and convert the PDF file to swf to browse files online. the linux system I installed is CentOs

Ubuntu11.10 install GNOME3 and uninstall UNITY and UNITY2D

Ubuntu11.10 install GNOME3: sudoapt-getinstallgnome-plugin-getinstallgnome-themes * (or simply choose sudoapt-getinstallgnome-themes-standard) sudoapt-getinstallgnome-twea .. Ubuntu 11.10 install GNOME3: Sudo apt-get install gnome-shellsudo apt-get

Common centos users cannot log on to ssh

Check the/etc/ssh/sshd_config file and find that the root user can directly log on to SSH without any restrictions .. generally, the default centos can be used to log on to SSH after a new user is created, but I cannot. The reason is that UsePam is

Differences between ll and ls in linux

The results listed in ll are detailed, including time, whether the data can be read or written, like in windows, the detailed information ls only lists the file name or directory name, just like in windows, the list ll-t is in descending order, ll-t

Linux log cleanup command

Two days ago, tomcat running on the server generated a log file of 12 GB, resulting in insufficient folder space, tomcat is suspended, found online, you can regularly clean all log files. /opt/tomcat/logs/catalina. out is the path where the file is

The reason for Windows to disappear (hidden) is reduced in linux.

Symptom: In linux, why does the window disappear (hidden) when it is reduced? You can only press ALT + TAB to call it out and view it again? Solution: Right-click the panel (windows is called the taskbar, linux is called the panel) & mdash; add to

SuseLinux sets the iso file of the operating system installation disk as the installation source to install mysql service

The iso file for setting the operating system installation disk for suseLinux is the installation source for installing mysql service. every time the installation program is installed, the system prompts you to insert the suse installation disc,

Install minicom and fastboot in ubuntu

1. installation of minicom 1. use sudoapt-getinstallminicom to install 2. use sudominicom-s to enter the configuration page, and select Serialportsetup option: www.2cto. comserialdevice:/dev/ttyUSB0... I. installation of minicom 1. use sudo apt-get

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