tion,declareandtypeset makeeachname local,aswiththe local command, unless the -goptionissup‐ plied.Ifa variable nameisfollowedby=value, the valueofthe variableissettovalue.Whenus‐ ing -aor-Aandthe compound assignment syntaxtocreate array variables, additional attributesdonottakeeffectuntilsubsequent...
You can assign data to a variable using the equals sign (=). The data you store in a variable can either be a string or a number. Let’s create a variable now on the command line: chapter_number=5 The variable name is on the left hand side of the equals sign, and the data whic...
echo 'Please enter your name.' #Here we are reading the standard input and assigning it to the variable name with the read command. read name #We are now going back to standard output, by using echo and printing your name to the command line. echo "With standard input you have told m...
value of the $location variable is not evaluatedaz group create--name$resourceGroup--location$location# Notice that the space in the $location variable is not ignored and the command fails as it treats the value after the space as a new commandaz group create--name$resourceGroup--location"$...
Remove a job from the job table. enable Used to enable or disable built-in command. exec Replace the shell process with the specified command. exit Used to exit the shell with an exit status. export Used to set a variable available for sub-process. fc Select a list of commands from the...
When bash is started non-interactively, to run a shell script, for example, it looks for the variable BASH_ENV in the environment, expands its value if it appears there, and uses the expanded value as the name of a file to read and execute. Bash behaves as if the following command ...
cli.knack.cli: Command arguments: ['storage', 'account', 'create', '--name', 'msdocssa00000000', '--resource-group', 'msdocs-rg-test', '--location', 'eastus', '--sku', 'Standard_RAGRS', '--kind', 'StorageV2', '--output', 'json', '--debug'] ... cli.azure.cli.core...
tee: 将数据输出到标准输出设备(屏幕) 和文件比如:somecommand | tee outfile basename file: 返回不包含路径的文件名比如: basename /bin/tux将返回 tux dirname file: 返回文件所在路径比如:dirname /bin/tux将返回 /bin head file: 打印文本文件开头几行 ...
"language.bash.languageServer.command":"bash-language-server","language.bash.languageServer.arguments":["start"], Emacs Lsp-modehas a built-in client, can be installed byuse-package. Add the configuration to your.emacs.d/init.el (use-packagelsp-mode:commandslsp:hook(sh-mode.lsp)) ...
# NOTE: This variable may be empty. # Optionally set a fallback to the hostname command. "${HOSTNAME:-$(hostname)}" 获取操作系统的体系结构 "$HOSTTYPE" 获取操作系统/内核的名称 这可用于为不同的操作系统添加条件支持, 而无需调用uname。