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42 lines
991 B
Plaintext
42 lines
991 B
Plaintext
---
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syntax: markdown
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tags: [tldr, common]
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source: https://github.com/tldr-pages/tldr.git
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---
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# read
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> Shell builtin for retrieving data from `stdin`.
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> More information: <https://www.gnu.org/software/bash/manual/bash.html#index-read>.
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- Store data that you type from the keyboard:
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`read {{variable}}`
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- Store each of the next lines you enter as values of an array:
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`read -a {{array}}`
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- Specify the number of maximum characters to be read:
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`read -n {{character_count}} {{variable}}`
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- Assign multiple values to multiple variables:
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`read <<< "{{The surname is Bond}}" {{_ variable1 _ variable2}}`
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- Do not let backslash (\) act as an escape character:
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`read -r {{variable}}`
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- Display a prompt before the input:
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`read -p "{{Enter your input here: }}" {{variable}}`
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- Do not echo typed characters (silent mode):
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`read -s {{variable}}`
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- Read `stdin` and perform an action on every line:
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`while read line; do {{echo|ls|rm|...}} "$line"; done < {{/dev/stdin|path/to/file|...}}`
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