unix_command

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基本指令 uname

更新記錄

item note
20150626 第一版

目錄

基本指令

顯示kernel版本

指令: uname -r
檔案: /proc/cmdline (load kernel information)
檔案: /proc/version
man uname

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uname - print system information
-a, --all
       print all information, in the following order, except omit -p and -i if unknown:
-s, --kernel-name
       print the kernel name
-n, --nodename
       print the network node hostname
-r, --kernel-release
       print the kernel release
-v, --kernel-version
       print the kernel version
-m, --machine
       print the machine hardware name

example

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xx$ uname -a
Linux erwin-Aspire-4810T 3.16.0-41-generic #57~14.04.1-Ubuntu SMP Thu Jun 18 18:01:13 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
xx$ uname -s
Linux
xx$ uname -n
erwin-Aspire-4810T
xx$ uname -r
3.16.0-41-generic
xx$ uname -v
#57~14.04.1-Ubuntu SMP Thu Jun 18 18:01:13 UTC 2015
xx$ uname -m
x86_64

xx$ uname -r
       3.16.0-41-generic
xx$ cat /proc/cmdline 
BOOT_IMAGE=/boot/vmlinuz-3.16.0-41-generic root=UUID=b6a68548-4dfd-46eb-bd4c-6490c4d296cb ro quiet splash vt.handoff=7
xx$ cat /proc/version

Linux version 3.16.0-41-generic (buildd@allspice) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) 57~14.04.1-Ubuntu SMP Thu Jun 18 18:01:13 UTC 2015

顯示os版本

指令: lsb_release
檔案: /etc/lsb-release
檔案: /etc/os-release

man lsb_release

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lsb_release - print distribution-specific information
-v, --version
       Show the version of the LSB against which your current installation is compliant.  The version is expressed as a colon  sepa‐
       rated list of LSB module descriptions.
-i, --id
       Display the distributor's ID.
-d, --description
       Display a description of the currently installed distribution.
-r, --release
       Display the release number of the currently installed distribution.
-c, --codename
       Display the code name of the currently installed distribution.
-a, --all
       Display all of the above information.
-s, --short
       Use the short output format for any information displayed.  This format omits the leading header(s).

example

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xx$ lsb_release -a
No LSB modules are available.
Distributor ID:      Ubuntu
Description:  Ubuntu 14.04.2 LTS
Release:      14.04
Codename:     trusty
xx$ lsb_release -v
No LSB modules are available.
xx$ lsb_release -i
Distributor ID:      Ubuntu
xx$ lsb_release -d
Description:  Ubuntu 14.04.2 LTS
xx$ lsb_release -r
Release:      14.04
xx$ lsb_release -c
Codename:     trusty
xx$ lsb_release -sc
trusty
xx$ lsb_release -si
Ubuntu

xx$ ls /etc/*-release
/etc/lsb-release  /etc/os-release
xx$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.2 LTS"
xx$ cat /etc/os-release 
NAME="Ubuntu"
VERSION="14.04.2 LTS, Trusty Tahr"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 14.04.2 LTS"
VERSION_ID="14.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"

取得使用者名稱

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xx$ id -un
erwin
xx$ sudo id -un
root

參考來源