Linux gzip Commands detailed
Reducing file size has two obvious benefits, one is to reduce storage space, and the other is to transfer files over the network, you can reduce the transmission time. Gzip is a regular use of Linux in the file
1. Kill
Role: Kill process according to process number
Usage: Kill [signal code] process ID
Example:
[Root@localhost ~]# PS auxf |grep httpd
Note: kill-9 to force termination of exit
example [root@localhost ~]# PS aux |grep gaim
or [root@localhost ~]
The ELF (executable and linkable format) executes the connection file format, which is a more complex file format, but is widely used. Compared to other executable files under Linux (A.OUT,COF), its definition of the section and its support for the
The structure of the 1:linux system is the inverted tree with/as the beginning
2:/directory of some of the basic directory and stored content:
/bin # #一些二进制可执行文件即系统命令, written scripts can also be stored in the use of the TAB key to make up.
/sbin # #
Automatically restart Tomcat and restart after the garbled problem
Tomcat as an open source server, performance and stability than some of the business Server or worse. When you deploy a project to Tomcat, it will die in the interval, and the main
How to use SSH without password in Oracle RAC
During the Clusterware (CRS) and RAC Database installations, Oracle Universal Installer (OUI) must be able to OracleAutomatically replicates the software to all RAC nodes. Here we configure SSH to allow
On the old Intel processor, when the hardware detects an error, it broadcasts a MCE to each logical CPU of the system. This design is because of hardware flaws, because the original processor found an error (such as a memory error), it will flow
There are three types of routing structures:
1,neigh_table{} structure and neighbour{} structure
The stored and native physically adjacent host address information table, often referred to as a neighbor child node, refers to the local computer
After a lot of experiments, the following bugs were found:
1, the client shutdown caused the server to crash, a fault occurred
2, when the server segment error occurs, again to open the server can not be video coding again, after removing the video
the definition of the stackStack is a linear table that restricts insertion and deletion operations at one end of a table, the end of which is the top of the stack, and the other end is called the stack Bottom (Bottom). An empty stack is called when
[Date: 2015-04-22]
Source: Linux Community Author: Linzizhang
[Font: Big Middle and small]
The Linux operating system has been constantly evolving and improving, and the kernel version is constantly being updated. For Linux users,
Bash Scripts Foundation II
1.Bash Position Parameters
There are two simple ways to read user input into a variable in bash.
-Use Read to prompt the user for input (using the-P option) and store it directly to one or more variables:
Interactive
Command English original command path EXECUTE permission function description syntax
chmod change the permission mode of File/bin/chmod permissions for all users to alter the file directory chmod {ugo}{+-=}{permissions}
U represents user, Owner
G
Sometimes we just took over the iptables rules that the server used to do. We may not know, need to look at the iptables rules how to write since the understanding of the machine, I will introduce to view the Iptables rule instance.
Iptables is a
Device Model Equipment Type:
* * The type of device, "struct device" is embedded in. A class
* or bus can contain devices of the different types
* like "Partitions" and "Disks", "Mouse" and "event".
* This identifies the device type and carries
1. Install Ant
Download apache-ant-1.9.4-bin.tar.gz, using Sshsecureshellclient-3.2.9.exe to transfer it from Windows to the virtual machine under/usr/local
Tar zxpvf apache-ant-1.6.2.tar.gz
Ln-s apache-ant-1.6.2 Ant
Two commands to install it
2
Author: Li Yunpeng (qqliyunpeng@sina.cn)Version number: 20170124Update Time: Original time: Copyright: This article is authorized by the following agreement, free reprint-non-commercial-non-derivative-keep the signature | Creative Commons by-nc-nd 3.
Original address: http://blog.csdn.net/wirelessqa/article/details/8968381
A. Pipeline command
The pipe command operator is: "|", which can only handle the correct output information that is transmitted through the previous instruction, and has
The kernel source tree has two documents in the directory Kconfig (2.4 version is config.in) and makefile. The kconfig distributed to each directory constitutes a distributed kernel configuration database, each of which describes the kernel
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