隐藏工具栏setguioptions-=m " 隐藏菜单栏setsmartindent " 开启新行时使用智能自动缩进setbackspace=indent,eol,start " 不设定在插入状态无法用退格键和 Delete 键删除回车符setcmdheight=1" 设定命令行的行数为1setlaststatus=2"显示状态栏(默认值为1,无法显示状态栏)setstatusline=\%<%F[%1*%M%*%n%R%H]...
许多程序使用这个setuid位以root身份运行,以获取它们需要更改系统文件的特权。 一个例子是passwd程序,它需要更改/etc/passwd文件。 2.17.1 Modifying Permissions 修改权限 To change permissions, use the chmod command. First, pick the set of permissions that you want to change, and then pick the bit to ...
# 强制退出i# insertesc# to command mode:w# save ,有:的命令叫ex command# moveh, j, k, l ctrl-f/b numberG gg# 第一个字符G last line of the file0(zero) 行首 ^ To the first non-whitespace character on the current line.$endof current line w beginning ofnextwordorpunctuation W ig...
set a shell variable The simplest way to set a variable using the command line is to type its name followed by a value: [VARIABLE_NAME]=[variable_value] As an example, create a variable calledEXAMPLEwith a text value. If you type the command correctly, the shell does not provide any o...
在我顿悟后,进入 bios,果然发现快速启动下的sata support设置成仅最后一次加载的 SATA 设备。改成所有 sata 设备后,Grub2 正常引导 Windows Boot Manager。 这个问题跟哪个系统没关系,只是因为我的 Windows 装在 sata 接口的固态里。而 Rocky 装在 NVMe 的固态里。
$ command > file The shell creates file if it does not already exist. If file exists, the shell erases (clobbers) the original file first. (Some shells have parameters that prevent clobbering. For example, enter set -C to avoid clobbering in bash.) 如果文件不存在,shell会创建该文件。
printenv |grep[VARIABLE_NAME] 1. Another command you can use to check environment variables isset. However, this command will also include local variables, as well as shell variables and shell functions. # cxxu_kali @ cxxuWin11 in /mnt/c/users/cxxu/temp [18:24:12] ...
While ShellCheck is mostly intended for interactive use, it can easily be added to builds or test suites. It makes canonical use of exit codes, so you can just add ashellcheckcommand as part of the process. For example, in a Makefile: ...
当命令set +o noclobber执行后, noclobber选项不再启用,echo c >> a.txt命令执行成功,a.txt内容变为: b c 在上面命令序列中 set -o noclobber 也可以简写为 set -C set +o noclobber 也可以简写为 set +C 4.6 set -e:当命令返回一个非零退出状态(失败)时退出 我们在上面的a.sh文件的第1行命令后面...
c -*- 797 798 Or like this: 799 800 /* 801 Local Variables: 802 compile-command: "gcc -DMAGIC_DEBUG_FLAG foo.c" 803 End: 804 */ 805 806 Vim interprets markers that look like this: 807 808 /* vim:set sw=8 noet */ 809 810 Do not include any of these in source files. Pe...