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read reads line from standard input

Description

The shell interpreter reads from the standard input line (up to the backslash "\"), except when the command is called with the "-r" parameter. arguments

var - name of an existing or non-existent shell variable Standard input

The standard input should be a text file Environment Variables

The following environment variables should affect the read operation: Example while read -r aa bb do printf "%s %s\n" "$aa" "$bb" done & lt; out_file

Displays a file in which the first field is moved to the end of a line.

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