1. Linux 系统登录之后,显示如下
Last login: Thu Jan 1 00:00:22 UTC 1970 on ttyS0 Linux xxx 4.1.6 #1 PREEMPT Wed Jul 19 13:15:08 CST 2017 armv7l
那么这些信息是哪里获取到的呢,比如Jul19 13:15....
Kernel每次编译的时间在源码的什么位置?
include/generated/compile.h
2. Kernel版本信息存放在源码什么位置?
include/generated/utsrelease.h
3. 如何定制自己的登录前后信息?
/etc/issue, 可以选择在这里做登录提示,或者项目标志打印, 可以选择\n \l可以看到hostname和tty登录信息
/etc/issue – escape code The issue-file (/etc/issue or the file set with the -f option) may contain certain escape codes to display the system name, date and time etc. All escape codes consist of a backslash (\) immediately followed by one of the letters explained below. \b : Insert the baudrate of the current line. \d : Insert the current date. \s : Insert the system name, the name of the operating system. \l : Insert the name of the current tty line. \m : Insert the architecture identifier of the machine, eg. i486 \n : Insert the nodename of the machine, also known as the hostname. \o : Insert the domainname of the machine. \r : Insert the release number of the OS, eg. 1.1.9. \t : Insert the current time. \u : Insert the number of current users logged in. \U : Insert the string “1 user” or “ users” where is the number of current users logged in. \v : Insert the version of the OS, eg. the build-date etc.
4. 如何查看系统的登录信息和一些操作log?
/var/log/auth.log
时间: 2024-10-15 02:12:51