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Editor to share with you how to view the log in the linux system, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

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/ var/log/message system startup information and error log is one of the most commonly used logs in Red Hat Linux / var/log/secure security-related log information / var/log/maillog mail-related log information / var/log/cron log information related to scheduled tasks / var/log/spooler log information related to UUCP and news devices / log messages related to var/log/boot.log daemon startup and stop

System:

# uname-a # View kernel / operating system / CPU information # cat / etc/issue # cat / etc/redhat-release # View operating system version # cat / proc/cpuinfo # View CPU information # hostname # View computer name # lspci-tv # list all PCI devices # lsusb-tv # list all USB devices # lsmod # list loaded kernel modules # env # View environment variables

Resources:

# free-m # View memory usage and switch area usage # df-h # View partition usage # du-sh # View the size of a specified directory # grep MemTotal / proc/meminfo # View Total memory # grep MemFree / proc/meminfo # View Free memory # uptime # View system Runtime, number of users, load # cat / proc/loadavg # View system load

Disks and partitions:

# mount | column-t # View the status of mounted partitions # fdisk-l # View all partitions # swapon-s # View all swap partitions # hdparm-I / dev/hda # View disk parameters (for IDE devices only) # dmesg | grep IDE # View the detection status of IDE devices at startup

Network:

# ifconfig # View properties of all network interfaces # iptables-L # View firewall settings # route-n # View 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 process status in real time (more on this in another article)

Users:

# w # View active users # id # View specified user information # last # View user login log # cut-d:-F1 / etc/passwd # View all users of the system # cut-d:-F1 / etc/group # View all groups of the system # crontab-l # View the current user's scheduled tasks

Services:

# chkconfig-list # list all system services # chkconfig-list | grep on # list all started system services

Program:

# rpm-qa # View all installed software packages above is all the contents of the article "how to View logs in linux system". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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