I want to check the use of the pthread_mutex_lock function, so I execute the command man pthread_mutex_lock, the result appears No manual entry for pthread_mutex_lock. I checked the information on the Internet and said that there was a No manual entry for pthread_mutex_lock prompt, need to install manpages-posix-dev.

So I'm ready to install manpages-posix-dev(I execute the command: apt-get install manpages-posix-dev), but E: Unable to locate package manpages-posix-dev prompts me again. Why?I'm using the debian 10 system.

gyz@debian:~$ man  pthread_mutex_lock
No manual entry for pthread_mutex_lock
gyz@debian:~$ sudo apt-get install manpages-posix-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package manpages-posix-dev
gyz@debian:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 10 (buster)
Release:        10
Codename:       buster
gyz@debian:~$ getconf LONG_BIT
gyz@debian:~$ cat /proc/version
Linux version 4.19.0-9-amd64 (debian-kernel@lists.debian.org) (gcc version 8.3.0 (Debian 8.3.0-6)) #1 
SMP Debian 4.19.118-2+deb10u1 (2020-06-07)
sudo apt-get install glibc-doc.
  • Welcome to the site, and thank you for your contribution. To make your answer helpful to a wider range of audiences, would you mind editing your post to include an explanation on why this package is the right one (as opposed to manpages-posix-dev), and also use the appropriate formatting for your code example? – AdminBee Jul 10 '20 at 11:31
  • @AdminBee good question,now I just know when I install this package , I can man pthread_mutex_lock function。but I don't know what is the detailed reason.If you know, please tell me.thanks. – askQuestions Jul 13 '20 at 0:24

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.