Cheat Sheet #day54 - uname
uname Command Cheatsheet
The uname command in Unix/Linux is used to display system information. It provides details about the operating system and the hardware on which it is running.
Syntax
uname [OPTION]...
Common Options
-s: Print the kernel name.-n: Print the network node hostname.-r: Print the kernel release.-v: Print the kernel version.-m: Print the machine hardware name.-p: Print the processor type.-i: Print the hardware platform.-o: Print the operating system.-a: Print all available system information.
Examples and Use Cases
Print the Kernel Name
uname -s
- Outputs the name of the kernel (e.g.,
Linux).
Print the Network Node Hostname
uname -n
- Outputs the network node hostname (e.g.,
hostname).
Print the Kernel Release
uname -r
- Outputs the kernel release number (e.g.,
5.4.0-42-generic).
Print the Kernel Version
uname -v
- Outputs the kernel version (e.g.,
#46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020).
Print the Machine Hardware Name
uname -m
- Outputs the machine hardware name (e.g.,
x86_64).
Print the Processor Type
uname -p
- Outputs the processor type (e.g.,
x86_64). Note: may showunknownon some systems.
Print the Hardware Platform
uname -i
- Outputs the hardware platform (e.g.,
x86_64). Note: may showunknownon some systems.
Print the Operating System
uname -o
- Outputs the operating system (e.g.,
GNU/Linux).
Print All System Information
uname -a
Outputs all available system information in a single line:
Linux hostname 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Combining Options
You can combine multiple options to get specific pieces of information together. For example:
Print Kernel Name and Release
uname -sr
Outputs the kernel name and release:
Linux 5.4.0-42-generic
Additional Information
To get help or see the full list of options, you can use:
uname --helpFor detailed documentation, refer to the man page by typing:
man uname
This cheatsheet provides a quick reference to the most common usages and options for the uname command. For more detailed information, you can always refer to the uname man page.
