#!/bin/bash ## Description: Adds users based on provided CSV file ## CSV file must use ':' as a separator, like this ## uid:username:comment:group:addgroups:/home/dir:/usr/shell:passwdage:password ## Written by: xxx - xxx@example.com on 03-2024 跟C/C++、Java等语言开发一样,适...
n>| file Force output to file from file descriptor n even if noclobber is set. <> file Use file as both standard input and standard output. n<> file Use file as both input and output for file descriptor n. << label Here-document; see text. n> file Direct file descriptor n to fil...
As the name suggests, sort sorts text in alphabetical order:Bash Copy sort < file.txt To save the sorted results to a new file, you can redirect input and output:Bash Copy sort < file.txt > sorted_file.txt You can use I/O operators to chain Linux commands as needed. Consider the...
0 Expands to the name of the shell or shell script. This is set at shell initialization. If bash is invoked with a file of commands, $0 is set to the name of that file. If bash is started with the -c option, then $0 is set to the first argument after the string to be executed...
--input-metalink=FILE download files covered in local Metalink FILE -F, --force-html treat input file as HTML -B, --base=URL resolves HTML input-file links (-i -F) relative to URL --config=FILE specify config file to use --no-config do not read any config file --rejected-log=...
If you want to bypass to guided input you can pass in 3 arguments and it will run from there ex.currency [baseCurrency] [exchangeToCurrency] [amountBeingExchanged] so a valid use case would be currency USD EUR 12.35 Geo Provides data for wan, lan, router, dns, mac, and ip geolocatio...
#use what we learned in a script. #Let's get some information from the user and add it to our scripts with stanard input and read echo "What is your name? " read name #Here standard output directed to append a file to learnToScirptStandardOutput ...
Used to tell the operating system the path it should use to interpret the file. bash file.sh Used to execute the script in the terminal. ./file.sh Used to execute the script if it is executable. # Used to make comments in the script. && logical AND operator. | | logical OR operator...
( )将command group置于sub-shell去执行,也称nested sub-shell,它有一点非常重要的特性是:继承父shell的Standard input, output, and error plus any other open file descriptors。 exec命令:常用来替代当前shell并重新启动一个shell,换句话说,并没有启动子shell。使用这一命令时任何现有环境都将会被清除。exec在对...
# Note that we use`"$@"' toleteach command-line parameter expand to a # separate word.The quotes around`$@' are essential! # We need TEMP as the`eval set--' would nuke thereturnvalueofgetopt.#-o表示短选项,两个冒号表示该选项有一个可选参数,可选参数必须紧贴选项 ...