2016-01-05 21:47:20 +00:00
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# read
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2023-07-07 04:26:30 +01:00
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> Shell builtin for retrieving data from `stdin`.
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2021-10-13 07:22:50 +01:00
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> More information: <https://manned.org/read.1p>.
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2016-01-05 21:47:20 +00:00
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- Store data that you type from the keyboard:
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`read {{variable}}`
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2024-08-05 16:04:22 +01:00
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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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2024-08-06 17:27:02 +01:00
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`read {{_ variable1 _ variable2}} <<< {{"The surname is Bond"}}`
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2024-08-05 16:04:22 +01:00
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2022-11-23 11:05:31 +00:00
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- Do not let backslash (\\) act as an escape character:
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2017-11-29 09:05:52 +00:00
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`read -r {{variable}}`
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2019-01-23 13:37:43 +00:00
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2024-08-05 16:04:22 +01:00
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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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2021-02-13 20:03:16 +00:00
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2024-08-04 11:19:32 +01:00
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`while read line; do {{echo|ls|rm|...}} "$line"; done < {{/dev/stdin|path/to/file|...}}`
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