Module: LinuxStat::OS
- Defined in:
- lib/linux_stat/os.rb
Class Method Summary collapse
-
.bits ⇒ Object
Reads ruby configuration and tries to guess if the system is 64 bit.
-
.distribution ⇒ Object
Reads /etc/lsb-release or /etc/os-release tries to get information about the distribution.
-
.hostname ⇒ Object
Returns the hostname from LinuxStat::Sysconf.hostname.
-
.lsb_release ⇒ Object
Reads /etc/lsb-release and returns a Hash.
-
.machine ⇒ Object
Uses utsname.h to determine the machine.
-
.nodename ⇒ Object
Uses utsname.h to determine the system nodename.
-
.os_release ⇒ Object
Reads /etc/os-release and returns a Hash.
-
.uptime ⇒ Object
Reads /proc/uptime and returns the system uptime: LinuxStat::OS.uptime.
-
.version ⇒ Object
(also: distrib_version)
Gives you the version of the OS you are using.
Class Method Details
.bits ⇒ Object
Reads ruby configuration and tries to guess if the system is 64 bit.
If it fails then it runs utsname.h to guess the machine.
It the machine is 64 bits, it will return 64, else it returns 32.
The return type is strictly Integer and doesn’t fail.
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# File 'lib/linux_stat/os.rb', line 127 def bits @@bits ||= if RbConfig::CONFIG['host_cpu'].end_with?('64') || RUBY_PLATFORM.end_with?('64') || machine.end_with?('64') 64 else 32 end end |
.distribution ⇒ Object
Reads /etc/lsb-release or /etc/os-release tries to get information about the distribution.
If the information isn’t available, it will read and return /etc/issue.
The return type is String. If none of the info is available, it will return an empty frozen String.
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# File 'lib/linux_stat/os.rb', line 44 def distribution @@distribution ||= if os_release.key?(:NAME) os_release[:NAME] else v = lsb_release if v.key?(:DISTRIB_DESCRIPTION) v[:DISTRIB_DESCRIPTION] elsif v.key?(:DISTRIB_ID) v[:DISTRIB_ID] elsif File.readable?('/etc/issue'.freeze) IO.read('/etc/issue'.freeze, encoding: 'ASCII-8bit'.freeze).strip else 'Unknown'.freeze end end end |
.hostname ⇒ Object
Returns the hostname from LinuxStat::Sysconf.hostname.
The return type is String. If the info info isn’t available, it will return an empty String.
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# File 'lib/linux_stat/os.rb', line 115 def hostname LinuxStat::Sysconf.hostname end |
.lsb_release ⇒ Object
Reads /etc/lsb-release and returns a Hash. For example:
LinuxStat::OS.lsb_release
=> {:LSB_VERSION=>"1.4", :DISTRIB_ID=>"Arch", :DISTRIB_RELEASE=>"rolling", :DISTRIB_DESCRIPTION=>"Arch Linux"}
If the info isn’t available, it will return an empty Hash.
The amount of data read is 4096 bytes. Any more than that will result in truncated output.
The information is also cached, and once loaded, won’t change in runtime. Because changing the /etc/lsb-release isn’t expected in runtime.
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# File 'lib/linux_stat/os.rb', line 33 def lsb_release @@lsb_release ||= File.readable?('/etc/lsb-release') ? release('/etc/lsb-release') : {} end |
.machine ⇒ Object
Uses utsname.h to determine the machine
It returns a String but if the info isn’t available, it will return an empty String
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# File 'lib/linux_stat/os.rb', line 98 def machine @@machine ||= LinuxStat::Uname.machine end |
.nodename ⇒ Object
Uses utsname.h to determine the system nodename
It returns String but if the info isn’t available, it will return an empty String.
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# File 'lib/linux_stat/os.rb', line 106 def nodename LinuxStat::Uname.nodename end |
.os_release ⇒ Object
Reads /etc/os-release and returns a Hash. For example:
LinuxStat::OS.os_release
=> {:NAME=>"Arch Linux", :PRETTY_NAME=>"Arch Linux", :ID=>"arch", :BUILD_ID=>"rolling", :ANSI_COLOR=>"38;2;23;147;209", :HOME_URL=>"https://www.archlinux.org/", :DOCUMENTATION_URL=>"https://wiki.archlinux.org/", :SUPPORT_URL=>"https://bbs.archlinux.org/", :BUG_REPORT_URL=>"https://bugs.archlinux.org/", :LOGO=>"archlinux"}
If the info isn’t available, it will return an empty Hash.
The amount of data read is 4096 bytes. Any more than that will result in truncated output.
The information is also cached, and once loaded, won’t change in runtime. Because changing the /etc/lsb-release isn’t expected in runtime.
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# File 'lib/linux_stat/os.rb', line 17 def os_release @@os_release ||= File.readable?('/etc/os-release') ? release('/etc/os-release') : {} end |
.uptime ⇒ Object
Reads /proc/uptime and returns the system uptime:
LinuxStat::OS.uptime
=> {:hour=>10, :minute=>34, :second=>12.59}
If the stat isn’t available, an empty hash is returned.
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# File 'lib/linux_stat/os.rb', line 142 def uptime return {} unless uptime_readable? uptime = IO.read('/proc/uptime'.freeze).to_f uptime_i = uptime.to_i h = uptime_i / 3600 m = uptime_i % 3600 / 60 s = uptime.%(3600).%(60).round(2) { hour: h, minute: m, second: s }.freeze end |
.version ⇒ Object Also known as: distrib_version
Gives you the version of the OS you are using.
On ArchLinux for example:
LinuxStat::OS.version
=> "rolling"
On Ubuntu 20.04:
LinuxStat::OS.version
=> "20.04"
On CentOS 26:
LinuxStat::OS.version
=> "26"
The return type is String. But if the information isn’t available, it will return an empty frozen String.
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# File 'lib/linux_stat/os.rb', line 82 def version @@distrib_version ||= if os_release.key?(:VERSION_ID) os_release[:VERSION_ID] elsif lsb_release.key?(:DISTRIB_RELEASE) lsb_release[:DISTRIB_RELEASE] elsif os_release.key?(:VERSION) os_release[:VERSION] else ''.freeze end end |