Linux Learning Notes Post process (cron and crontab)
. Set the crontab file and use it to submit the job. To submit a job using the AT command. Submitting jobs in the background. To submit a job using the Nohup command
Cron system scheduling process
Linux synchronizes with Windows via NFS files
Note: This is a description of Windows as NFS server-side, Linux as an NFS client-configured file synchronization.
Purpose: The common development of WS is to modify the code under Windo and then use
Programming method of Linux DaemonA daemon (Daemon) is a special process running in the background. It is independent of the control terminal and periodically performs a task or waits to handle certain occurrences. The daemon is a very useful
Arcgis server requires a little configuration to connect to SDE on Solaris and Linux with a direct connection:
1 set the following parameters before the exec $* in /bin/arcsoc.init file:
Sdehome=;export SdehomeOracle_home=;export
proc File System
The/proc directory is the Linux proc file system, which contains the kernel configuration information, network configuration system, and the state of the process are all based on the PID clearly directory. In short, you can find
2. Agreement related
2.1, the 3rd layer of the Protocol management
In the Linux kernel, there are 3-tier protocols for two different purposes:
(1) The Ptype_all Management protocol is used primarily for analysis purposes, and it receives all packets
How to set up the IP manually with the newly installed Linux system. Enter the terminal according to the following steps can be simple and convenient configuration of IP
1th Step: Setup---Network configuration--->device configuration-->eth0 (1th
Linux's virtual memory management has several key concepts
1. each process has a separate virtual address space, the virtual address that the process accesses is not a real physical address
2. virtual addresses can be mapped with physical
File list:Code Files
/* The following code is saved to Plus.cpp *
/int my_plus (int x,int y)
{return
x + y;
}
/* The following code is saved to minus.cpp
/int my_minus (int x,int y)
{return
xy;
}
/* The following code is
There are a lot of SAR command parameters and there's time for man. The-n parameter is useful, he has 6 different switches: DEV | Edev | NFS | NFSD | Sock | All. DEV Displays network interface information, Edev displays statistics about network
Sed is a non-interactive editor that is not destructive and does not modify files unless you use redirects to save the output, and the defaultcase, all output lines are printed on the screen.Sed saves the row currently being processed in a temporary
LDD View executable link which system dynamic link library
NM see what symbols are in the executable
Strip Remove symbol table can give the executable a thin body
If we want to extract a bit of textual information from an executable program, we
The main purpose of the Samba service configuration is to share the Windows operating system with Linux files. Its main configuration process is as follows:
1 "The service of Samba is built under Linux
Note: The current process needs to be
Linux to view system commands, shell built-in commands, system configuration file help information. Linux help document distinguishes types; 1 stabilizing the Help for the command 5 for the help document for the configuration file
One View system
What is Eth0,eth1,eth2,lo eth0,eth1,eth2 ... On behalf of a network card, network card two, network card three ...... Lo representative 127.0.0.1, that is localhost reference: Linux command:ifconfig www.2cto.com Function Description:
Recently began to learn embedded Linux development, for embedded I was completely novice, but I still want to write something, to the later people to make a reference, so that some people less take detours.
1. Install the basic development
1.cd /opt/zookeeper-3.4.52. Enter the Conf subdirectory under the Zookeeper directory to create the zoo.cfg and add the content:Zoo.cfg to copy the zoo_sample.cfg under the Conf, otherwise there will be a coding
Linux Learning Fourth session--------------------------------------------------------------------------------------------------------------- ------------------------------------------------------19. Basic concept of document management
A linux iptables not only can be used to do the firewall can also be used to do port forwarding: example: Forwarding the 8080 port of the machine to another host, host ip:192.168.1.12, target host IP and port: 192.168.1.13 : 8088, the rules are as
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