Introduction to linux related commands

                                                                                                                                                                                                                                                        all all all have been dealing with Linux recently. Since I have a weak foundation in this area, I had to buy this book by Brother Niao and read it. It feels pretty good. I think the troublesome thing about Linux compared to Windows is that many things need to be controlled by commands. Of course, this is also the reason why many people like Linux. It is relatively short but powerful. In order to make it easier for everyone to find Linux-related commands, I will list the commands I know for your reference only:

System information
arch Display the processor architecture of the machine (1)
uname -m displays the machine's processor architecture (2)
uname -r displays the kernel version being used
dmidecode -q displays hardware system components - (SMBIOS / DMI)
hdparm -i /dev/hda list Architectural characteristics of a disk
hdparm -tT /dev/sda performs test read operations on the disk
cat /proc/cpuinfo displays CPU info information
cat /proc/interrupts displays interrupts
cat /proc/meminfo Verify memory usage
cat /proc/swaps Display which swaps are used
cat /proc/version Display the kernel version
cat /proc/net/dev Display network adapter and statistics
cat /proc/mounts Display the loaded file system
lspci -tv List PCI devices
lsusb -tv Display USB devices
date Display the system date
cal 2007 Display the calendar for 2007
date 041217002007.00 Set date and time - month, day, hour, minute, year, second
clock -w Save time modification to BIOS
Shutdown (system shutdown, restart and logout)
shutdown -h now Shut down the system (1)
init 0 Shut down the system (2)
telinit 0 Shut down the system (3)
shutdown -h hours:minutes & Shut down the system according to the scheduled time
shutdown -c Cancel the system shutdown according to the scheduled time
shutdown -r now Restart (1)
reboot Restart (2)
logout Logout

Linux installation service:

1. ##Check whether the ssh service is installed: rpm -qa | grep ssh

2. Install ssh service: yum (-y) install ssh (redhat system such as: redhat , centos) or sudo apt -get install ssh (debian system such as: ubunt)

3. View the process the program is running: ps -ef | grep weblogic

4. Kill Process: kill -9 process number

5. Start ssh (generally called sshd) process: service sshd start or Use /etc/init.d/sshd start

6. installation command: yum/rpm/apt

How to check the system version on linux:

##cat /etc/redhat-release disk space and file usage: df -h (human readable) du -h --max-depth=1 /usr You can view the space occupied by files in the directory with a starting depth of 1 in /usr. Clear file command: find ./ -type f -name "*.jsp" | -n | grep deleted Check the mounted hard disk: sudo fdisk -l Check the local IP curl ifcpnfig.melsof -p [Process ID] You can check the status of files opened by a certain ID process.

Check the output file:
tail -f nohup.out
Background startup:
nohup ./startWeblogic.sh

Super copy:

scp fromfilePath tofilePath(userName@IP:/filePath)
forExample:
scp isportal_uum_sj.tar.gz.0928 root@172.16.66.18:/opt /apache-tomcat-6.0.37/webapps

##>setup View system status system servie, etc.;

SFTP/ftp protocol

Firewall:

vi /etc/sysconfig/iptables

Release restrictions on a certain port (through the firewall):

-a input -m State -State New -M TCP -P TCP -DPORT 3083 (Port) -j Accept

## basic command firewall:

## Service iPtables Stop/ start

# Set the default closing/turn on the firewall:

chkconfig iPtables Off/On

Time synchronization service:

yum install ntp

Time adjustment command:

  ntpdate cn.pool.ntp.org
  
sysctl -w net.ipv4.tcp_tw_recycle=1

Install gcc

      yum -y install gcc make gcc-c++ openssl-devel

The above is the detailed content of Introduction to linux related commands. For more information, please follow other related articles on the PHP Chinese website!