Linux

Not planning at first, causing the/home space shortage, plus the partition table is not GPT, resulting in the inability to expand more than 2T, so it is necessary to re-partition a larger hard disk to/home.1. Partition and format the newly mounted

First, related termsCompression: An operation that reduces the file storage space by the algorithm and takes time to change spaceCompression ratio: The ratio of size before compression to a file compression operationIi. compression tools commonly

first, find files in Linux Which, Whereis, plus locate.Yum install-y mlocate//Installation LocateThe first time the data file does not exist,Input UpdateDB can be Findfind/tmp/chen/-type f-mmin-60-exec mv {} {}.bak \;Find/-inum 21111212Find.

Path:Absolute path: An absolute path is the way in which an input path begins with "/"Relative path: usually with "." or ".." All that starts with a relative pathTo view server basic information:Cat/proc/cpuinfo Viewing CPU

Basic concepts for users and groupsLinux operating system is a multi-user operating system, users must use the system to request an account, as the account of the identity of the system to use the resources allocated by the operating system. Each

今天学习了用户与账号的管理。大体分为两部分，一·账户管理；二·文件权限属性。The first part of the first summary: User accounts are divided into super-users, ordinary users and program users. Group accounts are divided into basic groups and additional groups. The second section: User

1. Download Source: http://ffmpeg.org/download.html2. Decompression: TAR–XVF ffmpeg-3.2.1.tar.bz23. Configurationeg:./configure--enable-shared--enable-memalign-hack--disable-debug--prefix=/home/heya/ffmpeg/out/--arch=arm--

useradd Command: 命令格式：useradd 用户名 参数 常用参数： -m 创建用户时创建用户目录 -d 创建用户时指定用户登陆时的目录

Basic commandsThe basic principles of 1.Linux:1, consisting of a small program with a single purpose; a combination of small procedures to complete complex tasks;2, all documents;3, try to avoid capturing the user interface; (try not to interact

Common logs on Linux are:1./var/log/cron Query crontab has not been executed, whether there is a problem.2./VAR/LOG/DMESG records the information generated by the kernel detection process when it is powered on.3./var/log/lastlog records the

DD is a very useful command under Linux/unix, which is to copy a file with a block of the specified size and make the specified conversion at the same time as the copy.Name: DDUsage rights: All user dd This directive is defined in manual as convert

in a real-world production environment, you will often encounter servers CPU full problem, this time, the correct method of troubleshooting, help to quickly locate the problem. 1, find the most CPU -consuming process executes top , displays a list

3.1 user profile and password configuration filesUser profile/etc/passwd, each user information occupies one line, separated by a colon: 7 segments.First paragraph: User name.Second paragraph: Early for storing user passwords, now x.The third

Now the Linux desktop has developed very well, playing music in the desktop operation is very simple. So we remember how we played the music when the desktop wasn't so good? Hey, I can't remember, it's too hard.But now we can install a small

"Points of knowledge"1. User's identity and ability; 2. file permissions and attribution; 3. Special permissions for documents; 4.su command with sudo service; 5. File access Control list."Important explanation"First, user identity and ability1)

Issue 1, Connection not onWorkaround:First enter the network card settings configuration directory, command line input cd/etc/sysconfig/network-scripts/Then select the network card that needs to be configured, open VI ifcfg-eth0 with the VI editor,

Before writing a simple script to detect the status of the host in the current network segment script, the following:#! /bin/bash#ping Check Host status forIpinch' Seq1 255`; Do{Ping-C1 192.168.214. $ip >/dev/NULL 2>&1if[$?-eq0 ]; Then Echo192.168.2

OpenSSL rand 15-base64 # password generation OpenSSL SHA1 filename # hash Algorithm checksum file OpenSSL MD5 filename # MD5 checksum file OpenSSL base64 filename.txt # base64 encoded/decoded files

1. Samba Service IntroductionSamba is the first bridge between Linux and Windows two platforms, and thanks to the advent of samba, we can communicate with each other on Linux systems and Windows systems, such as copying files, To realize the

1:dev/cdrom temporarily mounted to/mntPress Df-h to view the Mount status2: Set auto Mount#vim/etc/fstab Edit3: Go in vim text edit press O to the most downward start edit4: Input/dev/sro/mnt iso9660 defaults 0 05: Open YUM.REPOS.D under Etc