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system information

FreeBSD Display Information About The System Hardware

FreeBSD comes with different utilities, which can be use to gathered the information as per your needs. uname command is use to print system information. dmesg command is use to print kernel ring buffer information. sysctl command is use to configure kernel parameters at runtime as well as to read hardware information.

Following list summaries, all the command you need to gather FreeBSD hardware information.

1) Determining the Hardware Type/platform:
# uname -m
2) Determining machine processor architecture:
# uname -p
3) Determining FreeBSD release level:
# uname -r
Generally, following command is use to get all info at a time:
# uname -mrs

FreeBSD 5.0-RELEASE i386

4) Determining CPU information such as speed, make etc
# dmesg | grep CPU

CPU: Pentium 4 (1716.41-MHz 686-class CPU)
acpi_cpu0:  on acpi0
acpi_cpu: CPU throttling enabled, 8 steps from 100% to 12.5%

5) Determining real and available memory to FreeBSD:
# dmesg | grep memory

real memory  = 201326592 (192 MB)
avail memory = 188555264 (179 MB) 

Alternatively, try following command to grab memory information:
# sysctl -a | grep hw.*mem
# sysctl -a | grep mem


hw.physmem: 194985984
hw.usermem: 167641088
hw.cbb.start_memory: 2281701376

Note systcl has more info, just type the sysctl command to see rest of all information:
# sysctl -a | less
6) Determining how long a system has been up:
# uptime
7) Determining when a system was last rebooted or shutdown:
# last -1 reboot
# last -1 shutdown

8) Determining swap file system usage
# swapinfo -k
9) Determining who is logged in and what they are doing. Following all commands can be used. users command displays the list of all logged in users only.
# w
# who
# users

10) Find out when user was last logged in - You can use last command as follows:
# last user-name
(a) To find out user vivek was last logged, enter:
# last vivek

See FreeBSD getsysinfo.bash script. It is use to find general FreeBSD system information such as, hostname, OS version, Kernel version, Processor/CPU, Total RAM, System load, network interface, total logged in users, Hard disks, Runlevel etc. Make sure your read the detailed installation instruction.

Solaris: Remove / uninstall the software / package

You need to use pkgrm command which will remove a previously installed or partially installed package from the system. A check is made to determine if any other packages depend on the one being removed. If a dependency exists, the action taken is defined in the admin file.

The default state for the command is in interactive mode, meaning that prompt messages are given during processing to allow the administrator to confirm the actions being taken. Non-interactive mode can be requested with the -n option.

pkgrm command syntax

Use the following command syntax
pkgrm packagename
The following example removes SUNWgtar (GNU Tar):
pkgrm SUNWgtar

The following example removes all instances of SUNWjunk:
# pkgrm -R /export/root/client1 SUNWjunk*


  • -R root_path : Defines the full path name of a directory to use as the root_path . All files, including package system information files, are relocated to a directory tree starting in the specified root_path .

See the pkgrm(1M) man page for information and options:
man 1 pkgrm