linux system how to view the log (commonly used commands)
CAT
tail -f
log file Description
after the / var / log / message system startup information and error logs, Red Hat Linux is one of the most common log
/ var / log / secure log security-related information
/ var / log / maillog log information related to the mail
/ var / log / cron tasks related to the timing of log
/ var / log / spooler log information related to UUCP and news equipment
/var/log/boot.log daemon start and stop related log message
system:
# uname -a # View kernel / operating system / CPU information
# CAT / etc / Issue
# CAT / etc / RedHat release #-check the OS version
# cat / proc / cpuinfo # View CPU information
# hostname # View computer name
# lspci -tv # list all PCI devices
# lsusb -tv # lists all USB devices
# lsmod # listed loaded kernel modules
# env # viewing environment variable
resource:
# -m # as Free to view memory usage and exchange the use of district
# df -h # see how each partition usage
# du -sh <directory name> # 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
# fdisk -l # View all partition
# 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 detection status
network:
# # ifconfig network interface to view all attributes
# 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:
# # View PS -ef all processes
# top # display real-time process status (another article which detailed description)
user:
# w # View active users
# Id <user name> # Display the user information
# last # view the user login log
# 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 to list all system services #
# chkconfig -list | grep on # lists all system services to start
the program:
# # RPM -qa View all software installed package
CAT
tail -f
log file Description
after the / var / log / message system startup information and error logs, Red Hat Linux is one of the most common log
/ var / log / secure log security-related information
/ var / log / maillog log information related to the mail
/ var / log / cron tasks related to the timing of log
/ var / log / spooler log information related to UUCP and news equipment
/var/log/boot.log daemon start and stop related log message
system:
# uname -a # View kernel / operating system / CPU information
# CAT / etc / Issue
# CAT / etc / RedHat release #-check the OS version
# cat / proc / cpuinfo # View CPU information
# hostname # View computer name
# lspci -tv # list all PCI devices
# lsusb -tv # lists all USB devices
# lsmod # listed loaded kernel modules
# env # viewing environment variable
resource:
# -m # as Free to view memory usage and exchange the use of district
# df -h # see how each partition usage
# du -sh <directory name> # 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
# fdisk -l # View all partition
# 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 detection status
network:
# # ifconfig network interface to view all attributes
# 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:
# # View PS -ef all processes
# top # display real-time process status (another article which detailed description)
user:
# w # View active users
# Id <user name> # Display the user information
# last # view the user login log
# 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 to list all system services #
# chkconfig -list | grep on # lists all system services to start
the program:
# # RPM -qa View all software installed package