read: consolidate `read` from `common` and `linux` into `common` (#13375)

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Fazle Arefin 2024-08-06 01:04:22 +10:00 committed by GitHub
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2 changed files with 21 additions and 37 deletions

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`read {{variable}}`
- Store each of the next lines you enter as values of an array:
`read -a {{array}}`
- Specify the number of maximum characters to be read:
`read -n {{character_count}} {{variable}}`
- Assign multiple values to multiple variables:
`{{echo "The name is Bond"}} | read {{_ variable1 _ variable2}}`
- Do not let backslash (\\) act as an escape character:
`read -r {{variable}}`
- Read `stdin` or file and perform an action on every line:
- Display a prompt before the input:
`read -p "{{Enter your input here: }}" {{variable}}`
- Do not echo typed characters (silent mode):
`read -s {{variable}}`
- Read `stdin` and perform an action on every line:
`while read line; do {{echo|ls|rm|...}} "$line"; done < {{/dev/stdin|path/to/file|...}}`

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# read
> Shell builtin for retrieving data from `stdin`.
> More information: <https://manned.org/read.1p>.
- Store data that you type from the keyboard:
`read {{variable}}`
- Store each of the next lines you enter as values of an array:
`read -a {{array}}`
- Specify the number of maximum characters to be read:
`read -n {{character_count}} {{variable}}`
- Use a specific character as a delimiter instead of a new line:
`read -d {{new_delimiter}} {{variable}}`
- Do not let backslash (\\) act as an escape character:
`read -r {{variable}}`
- Display a prompt before the input:
`read -p "{{Enter your input here: }}" {{variable}}`
- Do not echo typed characters (silent mode):
`read -s {{variable}}`
- Read `stdin` and perform an action on every line:
`while read line; do echo "$line"; done`