Linux

Transferred from: http://os.51cto.com/art/201401/426464.htmSometimes, when you log in to the Linux desktop, you may want to start a program automatically. These start-up programs can be configured for an entire system (such as an automatic proxy),

Put the boot command into the/etc/rc.d/rc.local file so that you can start the service automatically each time you start, for example, Apache, after compiling Apache, will generate the Apachectl file under the bin of the installation directory, this

0. Study time:2014-05-15The which command is used to look up a specific file in the path specified by path and return the first found result.1. Command format :which file name2. Command functionYou typically use the which command to see if a system

(i) Unreliable signalsThe signal to the front is unreliable, and unreliable means that the signal may be lost: a signal has occurred, but the process may have been unaware of it. In addition, the process has limited control over the signal and can

Only know how to use this, plus double quotes, the reason is not very clearThe reason is that with double quotation marks can prevent escaping, using & in Linux will make the process background run, must be escaped to &, and the way of adding

join to see the literal meaning (join/participate) can be known that he is processing data between two files, and, mostly in the processing " two files with "same data" in the line, just add him together "means. Let's use the simple example below to

[email protected] ~]# Col [-XB] Options and Parameters:-x: Converts the TAB key to the equivalent space bar-B: Filter out all control characters, including RLF (Reverse line Feed) and HRF (Halt RLF)Example one: UsingCat-A shows all the special keys,

　　TR (abbreviated by Traslate) can be used to delete text from a piece of information, or to replace text messages![Email protected] ~]#TR[-DS] SET1 ... Options and Parameters:-d: Delete the SET1 string from the message;-s: replace the duplicate

today installed JDK encountered a lot of problems, I first encountered 64-bit virtual machine installed 32-bit operating system, and then encountered a series of trouble, almost a kind of crash feeling;For a version of the problem is a very critical

1. First, write service scriptsThe service script needs to go into the directory/etc/init.d, then touch memcached, and finally vim memcached after scripting, the script is as follows:#!/bin/bash#chkconfig: 345 60 60#description: Auto_runExport Path=/

Method One:Linux tomcat boot from bootModify the tomcat/bin/startup.sh to:Export java_home=/usr/java/j2sdk1.4.2_08Export classpath= $CLASSPATH: $JAVA _home/lib/tools.jar: $JAVA _home/lib/dt.jar:.Export path= $PATH: $JAVA _home/binExport

To install a USB stick as an example:1, in the Windows system to make Win7 of the U disk Startup disk (available UltraISO production).2, the U disk into the Lenovo small new USB interface, boot, press fn+f2 into the BIOS. 3, Boot--boot

  Iptables details Iptables principlesCurrently, firewalls are divided into the following types: Packet filtering, application proxy, and status detection Packet Filtering Firewall:The static packet filtering firewall is no longer available in the

VMSTAT NAME: Vmstat: Reports virtual memory statistics Syntax: Vmstat [-a] [-n] [-t] [-S unit] [delay [count] vmstat [-s] [-n] [-S unit] vmstat [-m] [-n] [delay [count] vmstat [-d] [-n] [delay [count] vmstat [-p disk partition] [-n] [delay [count]

DHCP server: 1. ip Address Resolution 2. assign an ip address to the client Install the dhcp software package:   After installing the dhcp service package, the system cannot start by default.   3. The dhcp service configuration file does not exist.

From: bbs.linuxtone.org/thread-16-1-1.html   Content: Author: NetSeek1. Delete 0-byte filesFind-type f-size 0-exec rm-rf {}\;2. View ProcessesSort by memory from large to smallPs-e-o "% C: % p: % z: % a" | sort-k5-nr3. sort by cpu utilization

1 IntroductionThread technology was proposed as early as 1960s, but the real application of multithreading to the operating system was in the middle of 1980s, and solaris was a leader in this field. Traditional Unix also supports the concept of

In linux, the password file is in/etc/passwd. in earlier versions, this file directly stores the encrypted password. The first two are "salt" values, which are a random number, the password is followed by an encrypted password. For security purposes,

Socket Connection Socket is a communication machine. With this mechanism, the development of the customer/server system can be carried out on both a local single machine and a network. The creation and use of sockets are different from those of

Oracle Linux 6.3 has been released for nearly two years, and its functions have been greatly improved. It has enhanced KVM, online file volume resizing, and LVM supports raid4, 5, 6, supports more virtual CPUs and larger memory. For details, refer