Linux

Document 1 (a.txt)111222333444555666777888999Document 2 (B.txt)AAABBBCCCDDDEee111FFF222333JJJKKK444the following three contents of the document are as follows: (C.txt)AAABBBCCCDDDEeeFFFJJJKKKThe practice is as follows:1. Merge two text into a

Step 1: Find the version number of the kernel file that is currently in use #uname-RStep 2: List all the kernel files, using RPM or Dpkg (Linux-based systems)Command #rpm-Q kernel or $dpkg--list ' linux-image* 'Step 3: Delete all old kernel files,

Linux under the appropriate user, use the crontab-l command to view the tasks that the user performs on a timed basis.1-$>crontab-lNo content. Indicates that no user is specified to execute the crontab file under the corresponding

About the bird's Linux private dishes*-wildcard character, representing random characters (0 to more)? -wildcards, which represent one character#-Gaze/-Jump symbol to restore special characters or wildcards to a general symbol| -demarcation of two

Command Introduction description Pwd Print out your current directory Mkdir Create a Directory RmDir Delete a directory Rm Deleting a file or directory-r: Deleting a

First look at the literal explanation:chattr: Chattr-change file attributes on a Linux file system lsattr -list file attributes on a Linux second extended file systemchattr command usage: chattr [-RVF] [-v version] [mode] files ...The [mode] section

The previous section has the system Initramfs has started to complete, the system control to the real Rootfs/sbin/init, the following is the time/sbin/init work.4/sbin/initInitramfs init script, through the Switch_root command, after switching to

Lastlog|less View all user login information[[email protected] ~]# Write User12 (send information to Administrator online)Ffffffffffffffff[[email protected] ~]# Wall 222222222 (broadcast to everyone)Broadcast message from root (pts/0) (Wed Nov 12 23:

Linux msgget return no space leftThe first thing to say is that such standard functions should form a habit of looking at the man manual to understand its usage and return values.Return no space left is divided into two cases:1, the number of MSG

Porting the script to the kernel is a cool thing, Lua has been ported to the kernel of NetBSD, there is a project called Lunatik to the Linux kernel, but only to support x86, not support arm, search on the internet, did not find ready, so I

Common Linux commands (III) and common linux commands In Linux, run the pwd command to view the complete path of the "current working directory. To put it simply, whenever you operate on a terminal, you will have a current working directory. If you

The linux script automatically enters the password, and the linux script enters the password Programmers using Linux must be familiar with password input. in Linux, they have strict permission restrictions on users. If they do a lot of things, they

Linux commands chattr and lsattr, linuxchattrlsattr Let's take a look at the literal explanation: Chattr: Chattr-change file attributes on a Linux file system Lsattr-List file attributes on a Linux second extended file system Chattr command

Linux automatically mounts the second hard disk partition, and linux mounts the second disk. Modify the/etc/fstab file. If it is mounted to the/data directory, add /Dev/sdb1/data ext4 defaults 1 1 The final result is as follows:

Bind simple self-use DNS server, binddns Purpose: To customize a domain name www.test.com, which can be resolved to a specified machine.   Install(Version: 9.7.3 ): Yum install bind   Configuration: Initialization Configuration: # Generate the rndc.

Install five input methods for CentOS Using the ibus in the centos repository, my CenOS6.3 comes with an ibus package. Enable System-preferences-Input Method to configure ibus to boot automatically. Install an ibus-table-wubi package Yum install

CentOS installation stardict3.0 Starship is a good translation software in Linux. My system is centos6.2 32-bit. Originally in the http://code.google.com/p/stardict-3/downloads/list source package installation. The result cannot be passed

View concurrent linux connections1. view the number of concurrent requests and TCP connection status of the Web server (Nginx Apache: Netstat-n | awk '/^ tcp/{++ S [$ NF]} END {for (a in S) print a, S [a]}' Netstat-n | grep ^ tcp | awk '{print $

PHP second-level domain name session Sharing Solution Generally, a website has a main site and a sub-site. For example, if the domain name is bkjia.com, bkjia.com and www.bkjia.com will be the main site, and bbs.bkjia.com will be used as the

Register_globals parameter settings in PHP Register_globals is a configuration in php. ini. This configuration affects how php receives the passed parameters. 1. When register_globals is Off, when receiving the next program, use $ _ GET ['user _