mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-27 11:43:37 +08:00
27 lines
1.3 KiB
Plaintext
27 lines
1.3 KiB
Plaintext
\section read read - read line of input into variables
|
|
|
|
\subsection read-synopsis Synopsis
|
|
<tt>read [OPTIONS] [VARIABLES...]</tt>
|
|
|
|
\subsection read-description Description
|
|
|
|
The <tt>read</tt> builtin causes fish to read one line from standard
|
|
input and store the result in one or more environment variables.
|
|
|
|
- <tt>-e</tt> or <tt>--export</tt> specifies that the variables will be exported to subshells.
|
|
- <tt>-g</tt> or <tt>--global</tt> specifies that the variables will be made global.
|
|
- <tt>-pPROMPT_CMD</tt> or <tt>--prompt=PROMPT_CMD</tt> specifies that the output of the shell command PROMPT_CMD should be used as the prompt for the interactive mode prompt. The default prompt command is <tt>set_color green; echo read; set_color normal; echo "> "</tt>.
|
|
- <tt>-cCMD</tt> or <tt>--command=CMD</tt> specifies that the initial string in the interactive mode command buffer should be CMD.
|
|
|
|
Read starts by reading a single line of input from stdin, the line is
|
|
then tokenized using the <tt>IFS</tt> environment variable. Each variable
|
|
specified in <tt>VARIABLES</tt> is then assigned one tokenized string
|
|
element. If there are more tokens than variables, the complete
|
|
remainder is assigned to the last variable.
|
|
|
|
\subsection read-example Example
|
|
|
|
<tt>echo hello|read foo</tt>
|
|
|
|
Will cause the variable \$foo to be assigned the value hello.
|