read

Question 1

read

Answer 1

Reads a single line from the standard input, or from file descriptor FD if the -u option is supplied.

Question 2

read

• a array, Assign the words read to sequential indices of the array variable ARRAY, starting at zero.
• d delim, Continue unitl the first character of DELIM is read, rather than newline.
• e, Use Readline to obtain the line.
• i text, Use TEXT as teh initial text for Readline.
• n nchars, Return after reading NCHARS characters rather than waiting for a newline, but honor the delimiter if fewer than NCHARS characters are read before the delimiter.
• N nchars, Return only after reading exactly NCHARS characters, unless EOF is encountered or read times out, ignoring any delimiter.

Answer 2

• p prompt, Output the string PROMPT without a trailing newline before attempting to read.
• r, Do not allow backslashes to escape any characters.
• s, Do not echo input coming from a terminal.
• t timeout, Time out and return failure if a complete line of input is not read within TIMEOUT seconds.
• u fd, Read from file descriptor FD instead of the standard input.