interp --enable-perlinterp=yes --enable-python3interp=yes --enable-tclinterp=yes --enable-rubyinterp=yes --enable-cscope --enable-terminal --enable-autoservername --enable-multibyte --enable-xim --enable-fontset
* ".") the kernel commandline parameter. Note that - is changed to _, so * the user can use "foo-bar=1" even for variable "foo_bar". * * @perm is 0 if the variable is not to appear in sysfs, or 0444 * for world-readable, 0644 for root-writable, etc. Note that if it *...
Created symlink from /etc/systemd/system/network-online.target.wants/NetworkManager-wait-online.service to /usr/lib/systemd/system/NetworkManager-wait-online.service. CentOS 6 中,查看开机自启动的服务: [root@centos zeloud]# chkconfig --list Note: This output shows SysV services only and does not...
set /?Displays, sets, or removes cmd.exe environment variables. SET [variable=[string]] variable Specifies the environment-variable name. string Specifies a series of characters to assign to the variable. Type SET without parameters to display the current environment variables. If Command Extensions...
to boot, allow them to set that in their boot0.h file and then* use it here.** To allow a boot0 hook to insert a 'special' sequence after the vector* table (e.g. for the socfpga), the presence of a boot0 hook supresses* the below vector table and assumes that the vector ...
18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. bash默认 nounset选项是未启用的,所以尽管并没有定义变量a,在执行命令echo a=$a时没出错信息,而是显示:a= 当我们执行命令set -u , 启用nounset选项后,再次执行命令echo a=$a时,显示了出错信息:bash: a: unbound variable赞...
set :A command set, show or change all kinds of preferences of console environment or other commands. The changed settings can be either permanent or temporary. alias :A command set, similar to the Unix alias command, mainly used to define the shortcut of other command line, the definition...
Do not put spaces around the = symbol or the shell will mistake your variable name for a command name. 2.1.3 变量和引用 变量名在赋值的时候没有标永,但在访问它们的值的时候要在变量名之前加一个$符。例如: $ etcdir='/etc' $ echo $etcdir ...
bash shell用一个叫作环境变量(environment variable)的特性来存储有关shell会话和工作环 境的信息(这也是它们被称作环境变量的原因)。这项特性允许你在内存中存储数据,以便程序 或shell中运行的脚本能够轻松访问到它们。 全局变量 局部变量 全局环境变量全局环境变量对于shell会话和所有生成的子shell都是可见...
There are many things you can do with the output of a command in Linux. You can assign the output of a command to a variable, send it to another command/program for processing through a pipe or redirect it to a file for further analysis. ...