Ubuntu11.10 common shortcuts

Start terminal: Ctrl + Alt + T switch program in progress: Alt + Tab switch desktop: Ctrl + Alt + up/down/left/right Quick start: click the mouse button to bring up the sidebar: long press the micro-tag key to quickly start the sidebar program:

File permissions in Linux

Project Environment: The customer deploys the Application Service (Java implementation) on a Windows Server, and deploys the JBIZ intermediate transaction service platform (C implementation) on Linux ). Problem: failed to copy files in Linux. The

Query the users currently logged on to the system

Query who logged on to the system [root @ lyy ~] # Whoroottty12010-12-0919: 16 rootpts/02010-12-0919: 29 (192.168.197.1) first column login user second column terminal name third column login time query per... Query who logged on to the system [root

Crontab error analysis and reason for not executing

CronCronisatime-basedjobschedulerinUnix-likecomputeroperatingsystems.Thenamecroncomesfromtheworldchronograph (atime-piece). Cronenablesuserstoschedulejo... CronCron is a time-based job scheduler in Unix-like computer operating systems. the name cron

Crontab prompts commandnotfound solution

Recently, crontab is used to execute some commands: regularly synchronize system time with hardware time. Because I always find that the time on my linux server will slow down, and I finally want to synchronize this method. At the beginning, I wrote

Linux study notes (III) -- Summary of Shell scripts

1. vi Editor shortcut key: [Ctrl] + [ud] move up/down n & lt; space & gt; right shift n characters H/M/L move to the top/center/bottom of the screen u [Ctrl] + r complex... info & nbsp; | & nbsp; 1. vi Editor shortcut key: [Ctrl] + [ud] move up/down

Linux study notes (5)-Linux system management

1. start the shutdown process and load the program 1. linux boot process a) load BIOS hardware information and obtain the code B of the first boot device) read the boot information of the boot loader for the MBR of the first boot device c) load the

Linux learning disk quota

General purpose: www server-page space capacity control mail server-Mail space limit file server-network hard disk space is generally used for disk space management restrictions: only for this partition; the core must support the disk quota; the

Linux determines whether all content in the path is a folder

PATH & quot; full PATH & quot; functionIsFile () {FULLPATH & quot; $1 & quot; # traverse the directory forfNamein $ (/bin/ls $ FULLPATH) dofileType '/usr/bin/file & quot; $ PATH & quot; $ fName & quot; |/bin. PATH = "Full PATH" function IsFile ()

Linux partition mounting problems

1. the VM allocates 10 GB space to linux. 2. log on to linux and run the fdisk-l command to view the newly allocated hard disk sdb, but there is no additional information (the system originally had 30 GB space as sda) 3 fdisk/dev/sdbmn # Add a

Install the NVIDIA driver on fedora16

Fedora16 install the NVIDIA driver suyumupdatekernel \ * selinux-policy \ * rebootsuyuminstallkernel-PAE-develsuyum -- nogpgcheckinstallhttp: // Configure Fedora 16 install NVIDIA driver su yum update kernel \ * selinux-policy \ * reboot su yum

Debian system install ssh service

1. configure apt-get source cp/etc/apt/sources. list/etc/apt/sources. listbak # back up the original configuration file nano/etc/apt/sources. list # edit and comment out the local disc source line: debcdrom: [DebianGNU/linux6.0.4... 1. configure apt-

Linux process and system information viewing command

Command for viewing linux processes and system information [root @ www ~] # Psaux & lt ;? Observation System? All programs? Expected [root @ www ~] # Ps-lA & lt; is it true? ^ Check all systems? ? Expected [root @ www ~] # Psaxjf & lt ;? Same part

Common linux/mysql/php/tool commands

Common linux/mysql/php/tool commands: 1.tar backup directory tarzcvf ***** .tar.gz *****/tar backup skipping directory tar -- excludetest1/* -- excludetest2/*-czf $ WEBDIR/test.$DATETIME.tar.gz. /test2.scp file... Common linux/mysql/php/tool

Modify the path configuration environment variable in linux

Modify the path configuration environment variable in linux. in the redhat system, $ vi. bash_profile between PATH and export, add the PATH you want to add, such as: PATH $ PATH: $ HOME/abc/bin-www.2cto.com-here the colon and window environment

Linuxcron service usage

The Cron service provides the following APIs: 1. directly use the crontab command to edit the following example to illustrate the problem: every morning *** echo & quot; Goodmorning. & quot; & gt;/tmp/test.txt // pay attention to echo alone, and no

Linux network settings

I am using a Linux NAT connection. 1: run the ifconfig command to check whether the NIC is installed. 2: Find the/etc/sysconfig/network-scripts/3: find the file ifcfg-eth * and edit the file name, set eth * to the name of your Nic. for example, if

Vim auto-complete brackets and quotation marks

Add the following content to the configuration file: inoremap () & lt; ESC & gt; iinoremap [[] & lt; ESC & gt; iinoremap {} & lt; ESC & gt; I & quot; inoremap & lt; & gt; & lt; ESC & gt; iinoremap & quot; & lt; ESC & gt; I Add the following content

Change the oralce character set in linux

In linux, oralce changes the character set and finds garbled characters. check whether the installed oracle is not a Chinese character set and change it... Query the current character set SQL code selectuserenv (& amp; #39; language & amp; #39;)

Modify the Linux file handle count limit

Because all linux systems are represented by files, it is necessary to modify the file handle limit during concurrent web systems. View the number of file handles used by a process # sudops-ef | grepjavaroot16631002: 37? 00:... information Because

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