Linux system monitoring common commands

 

• linux CPU size cat / proc / cpuinfo
• Memory size cat / proc / meminfo
• Hard disk size fdisk -l | grep Disk
• uname -a # View kernel / linux system operating system / CPU information information command
• head -n 1 / etc / issue # check the OS version, not the letter L is the number 1
• cat / proc / cpuinfo # View system information linux command CPU information
• hostname # View the computer name of the linux command information system
• lspci -tv # list all PCI devices
• lsusb -tv # lists all USB devices linux command information system
• lsmod # listed loadable kernel modules
• env # viewing environment variable resources
• free -m # View the amount of memory usage and swap
• df -h # see how each partition usage
• du -sh # View the specified directory size
• grep MemTotal / proc / meminfo # view the amount of memory
• grep MemFree / proc / meminfo # view the amount of free memory
• uptime # View system uptime, number of users, load
• cat / proc / loadavg # View system load disk and partition
• mount | column -t # View articulated partition status
• See all partitions fdisk -l #
• swapon -s # View all swap partitions
• hdparm -i / dev / hda # View disk parameters (only for IDE devices)
• dmesg | grep IDE # view when you start the IDE device detects network conditions
• ifconfig # view properties for all network interfaces
• iptables -L # View firewall settings
• route -n # View the routing table
• netstat -lntp # View all listening ports
• netstat -antp # view all established connections
• netstat -s # View network statistics process
• ps -ef # view all processes
• top # display real-time status of the user process
• w # View active users
• View information about a specified user id #
• View user login log last #
• cut -d: -f1 / etc / passwd # View all system users
• cut -d: -f1 / etc / group # View all system groups
• crontab -l # to view the current user's scheduled tasks service
• chkconfig -list # lists all system services
• chkconfig -list | grep on # lists all system services program starts
• rpm -qa # View all the packages installed
• cat / proc / cpuinfo: View CPU-related parameters linux system commands
• cat / proc / partitions: View System Information command linux hard disk and partition information
• cat / proc / meminfo: memory information see linux system linux system command
• cat / proc / version: Check version, similar to the uname -r
• cat / proc / ioports: View io port equipment
• cat / proc / interrupts: View interrupt
• cat / proc / pci: View information pci device
• cat / proc / swaps: View information for all swap partitions