可以使用 python -c 命令。...中获取该模块中的所有变量(即非函数、非内置的全局变量),可以使用以下步骤:方法:使用 dir() 函数结合过滤使用 python -c 运行 Python 脚本。...扩展如果需要进一步处理输出内容,可以在 Bash 中将其保存为数组:variables=($(python -c "import mymoduleimpor
bash add operator #!/bin/bash#!/usr/bin/env basharg1=$1arg2=$2# ✅num=$(($arg1+$arg2))# ✅str=$((arg1 + arg2))echo"num: \$arg1 + \$arg2 =$num"# -e 换行echo-e"\n"echo"str: arg1 + arg2 =$str"# DEMO# ./num.sh 1 2# num: $arg1 + $arg2 = 3# str: arg...
Install it in one of the directories pointed to by bash-completion'spkgconfigfile variables. There are two alternatives: The recommended directory iscompletionsdir, which you can get withpkg-config --variable=completionsdir bash-completion. From this directory, completions are automatically loaded on...
# variables below will be used to randomlygetthe extract-able cells/fields from our mine.a="1 10 -10 -1"b="-1 0 1"c="0 1"d="-1 0 1 -2 -3"e="1 2 20 21 10 0 -10 -20 -23 -2 -1"f="1 2 3 35 30 20 22 10 0 -10 -20 -25 -30 -35 -3 -2 -1"g="1 4 ...
2. Basic Shell Programming 在bash中你将编写第一行脚本文件,被叫做shebang。任何脚本中的这一行来确定脚本的执行能力,如独立的可执行文件,而不是在终端中预先键入sh,bash,python,php等。 #!/bin/bash 2.1. Variables 在bash中创建变量与其他语言类似。没有数据类型。bash中的变量可以包含数字,字符,字符串等。
curl_auth.sh - shortens curl command by auto-loading your OAuth2 / JWT API token or username & password from environment variables or interactive starred password prompt through a ram file descriptor to avoid placing them on the command line (which would expose your credentials in the process ...
Both functions use local and global variables to pass values around. If you need to shuffle an array larger than 32768 entries or your array is not a dense indexed array, then use the first method above using shuf. We want to ensure that every permutation is equally likely when shuffling ...
Let's say you have to calculate the sum of two variables. You do it like this: sum=$(($num1 + $num2)) There is no restriction on the use of white space inside the (()). You can use$(( $num1+ $num2)),$(( $num1+ $num2 ))or$(( $num1+ $num2 )). It all will ...
Some other shell variables that may be worth using include the BASHPID, PID, BASH, SHELL, BASHOPTS, SHELLOPTS, POSIXLY_CORRECT, and BASH_COMPAT. Those variables may be helpful to print at the beginning or end of the log ouput to know what is the current environment in which your script...
For variablesx = 2andy = 3, the output printsx + y = 5to the console. bc Command Thebccommand(short forbasiccalculator) is a command-line utility that renders the bc language. The program runs as an interactive program or takes standard input to perform arbitrary precision arithmetic. ...