Linux

The following is my work in the common use of the Linux command, recorded, convenient for daily work to learn to look through.Git Management code"System Actions"CD Entry DirectoryCD ~ Back to the root directoryLS View the files in the current

Accustomed to the use of windows  using  linux   crontab  Manage timed tasks is not suitable So the basic usage is summarized as follows.Create a simple scheduled taskOutput the current time per minute and output to the Time.log file in the

Configure host name, connect machine ********************************* by hostnameFor example, three hosts have been1, set hostname on Linux, Access Linux virtual machine via hostname1.1. Modify the Hosts filethe contents of the

4-1-1 Shell FeaturesCommand History View Historical instructionsRoot's history command is stored on/.bash_history, save 1000 by defaultInstructions!! View previous history directives and resultsInstructions! $ last variable on an

Recently in the monitoring project, some colleagues told me, "You see Linux performance is not good, memory usage is always up to 80%, I do not have this situation under Windows," I explained to him, because the Linux system, as far as possible to

Failure phenomena:Recently cloned several Linux systems in the company test environment, after rebooting, the NIC Eth0 was missing.So check the network card configuration, finally think of the following solutions, network card startup information:650

One, view the Linux kernel version command (two methods):1, Cat/proc/version [Email Protected]centos home]# cat/proc/versionLinux version 2.6.32-431.el6.x86_64 ([email protected]) (GCC version 4.4.7 20120313 (Red Hat 4.4.7-4) (gcc)) #1 SMP

LS Display file or directory-l list File details L (list)-a lists all files and directories under the current directory, including Hidden A (all)mkdir Creating a directory-P Create directory, if no parent directory, create p (parent)CD Switch

chmod [who] [+ | - | 　　=] [mode] filename? 　　The meaning of the options in the command is: The action object who is either or a combination of the following letters: U means "user", that is, the owner of the file or directory. 　　G means "same group

Linux/aix Use the CRONTAB-E command, and then the last line to add the Change function script, for example: Ten * * * sh/oracle/orabak/orabak.sh about the use of Linux under crontab minute hour day month DayOfWeek command minute-integers from 0 to 59

There are several ways to modify hostname1:hostname Db-server--effective immediately after operation (new session takes effect), but changes are lost after the system restarts2:echo db-server >/proc/sys/kernel/hostname--takes effect immediately

Font# *. TFFmv consolas/usr/share/fonts/consolaschmod755 /usr/share/fonts /consolasfc-cache-f-VExtundelete Recovering filesApt-getInstallE2fslibs-dev e2fslibs-DEVCD~/

Reference URL: http://man.linuxde.net/odSyntax od (option) (parameter)OD (option) (parameter)-A: The effect of this parameter is the same as specifying the "-ta" parameter;-a:-B: The effect of this parameter is the same as specifying the "-TOC"

Auto Mount Profile:/etc/fstab1#/etc/fstab:staticfileSystem Information.2 #3# Use'Blkid'To print the universally unique identifier fora4# device; This is used with uuid= as a Morerobust to name devices5# that works evenifDisks is added and removed.

JDK for Linux, MySQL, Tomcat, and jdktomcat 1. Additional knowledge In windows, we usually click setup.exe to install the program. In this case, we entrust the windows Control Panel to add or uninstall the program. Of course, you can install,

File Search --- find, Search --- find Find) 1 find Simply put, it is to find the specified content or conditions in real time. Features: Latest, fastest, and most accurate. Usage:Find[Search path] [Search Condition] [action after

Linux Regular Expressions     Differences between regular expressions and wildcards: The commands that most often use regular expressions are grep (egrep), sed, and awk. A regular expression is essentially different from a wildcard. A regular

Zabbix monitors elk es (online) and zabbixelk # Elk elasticsearch (online) ### 1. elasticsearch server, 192. 168. **. ** server (agent)1.> first, use curl-s-XGET http: // localhost: 9200/_ cat/indices? Bytes = G to get data 1.> install zabbix-agent 1

Linux_shell learning and linux_shell LearningUse of test in shellThe test command is used to check whether a condition is true. It can be used to test values, symbols, and files. 1. Use of Values-Eq equals-ne not equal to-gt greater than-ge greater

CentOS6.8 install FTP and add users, centos6.8ftp 1. install FTP 1. Check whether FTP is installed. rpm -qa | grep vsftpd 2. If not, install yum install vsftpd 2. Set vsftpd to start chkconfig --level 35 vsftpd on 3. Configure the FTP server (Enable