pxe - commands to get and boot from pxe files random - fill memory with random pattern reset - Perform RESET of the CPU run - run commandsinan environment variable save - savefileto a filesystem saveenv - save
env命令可通过将一组变量传递给命令来修改程序运行的环境: envMYVAR=lxlinux.net command_to_run command_options printenv与env命令只能打印出环境变量,而如果你想打印出所有变量或者 Shell 函数的列表,你可以使用set指令。 $ set BASH=/bin/bash BASHOPTS=checkwinsize:cmdhist:complete_fullquote:expand_aliases:...
The idea behind this was that one-time setup was done by.profile(or shell-specific version thereof), and per-shell stuff by.bashrc. For example, you generally only want to load environment variables once per session instead of getting them whacked any time you launch a subshell within a ses...
AI代码解释 #define _GNU_SOURCE#include<stdlib.h>#include<stdio.h>#include<string.h>externchar**environ;__attribute__((__constructor__))voidpreload(void){// get command line options and argconstchar* cmdline = getenv("EVIL_CMDLINE");// unset environment variable LD_PRELOAD.// unsetenv("...
run - run commands in an environment variable save - save file to a filesystem saveenv - save environment variables to persistent storage setenv - set environment variables setexpr - set environment variable as the result of eval expression ...
You can set your own variables at the command line per session, or make them permanent by placing them into the~/.bashrcfile,~/.profile, or whichever startup file you use for your default shell. On the command line, enter your environment variable and its value as you did earlier when ...
You can also send the standard error to the same place as stdout with the >& notation. For example, to send both standard output and standard error to the file named f, try this command: 你也可以使用 >& 符号将标准错误发送到与stdout相同的位置。例如,要将标准输出和标准错误都发送到名为f的...
To see the value of a single environment variable, use the following command and replace VARIABLE_NAME with your own variable. printenv VARIABLE_NAME For example, you can pass the HOME variable as an argument to the command. printenv HOME Alternatively, you can use the echo command, and...
If you need to configure SQL Server after these setup scenarios, see Configure SQL Server on Linux with the mssql-conf tool. Environment variables Expand table Environment variableDescription ACCEPT_EULA Set the ACCEPT_EULA variable to any value to confirm your acceptance of the End-User Licensin...
New("index out of range [0] with length 0") } // search for an executable named file in the // directories named by the PATH environment variable. // If file contains a slash, it is tried directly and the PATH is not consulted. // The result may be an absolute path or a path...