1

As far as i know that read in bash contains many argument such as -a -d -e -r. The webpage list all arguments of read.
read's arguments

In my console, man read contains no argument on it. I upload man read > read.txt into dropbox,please download it and verify.

man read > read.txt

showkey
  • 291

2 Answers2

1

ref: https://en.wikipedia.org/wiki/Man_page#Manual_sections

Note the 2 in READ(2) - that tells you're viewing something from section 2 of the man pages.

Depending on which OS you're using, the section content might differ. Please see the Wikipedia page linked above.

The content you show is the "read()" function, from basic "C" computer programming language (present already in K&R C).

The "read" you're after is described either in "man bash" or (as told in man bash) tersely by "help read".

You will also find most about bash in the Bash guides at http://www.tldp.org/ (lengthy texts, loads of examples).

Hannu
  • 10,568
0

Why man read don't contain any argument description in my debian?

Use help read instead.

read is a bash builtin command. to display options, description, you should use the help command. see help help or the gnu documentation:

help

help [-dms] [pattern]

Display helpful information about builtin commands. If pattern is specified, help gives detailed help on all commands matching pattern, otherwise a list of the builtins is printed.

Options, if supplied, have the following meanings:

-d

    Display a short description of each pattern 
-m

    Display the description of each pattern in a manpage-like format 
-s

    Display only a short usage synopsis for each pattern
GAD3R
  • 3,900