Linux.org
Linux environment installation Installation of MacOS environment Compiler installation. -1.22.tar.gz #Enter the directory $ cd groff-1.22 #Compile and install $ ./configure $ sudo make $ sudo make install #Open profile $ sudo vim /etc/man.conf #After entering the editor, add `NROFF preconv -e UTF8 | /usr/local/bin/nroff -Tutf8 -mandoc -c` # read man page NAME read - Read a line from the standard input and split it into fields. SYNOPSIS read [-ers] [-a array] [-d delim] [-i text] [-n nchars] [-N nchars] [-p prompt] [-t pam_selinux - PAM module to set the default security
read man page
Oct 14, 2012 Open(3 open file - Linux man page - I do not worry
Read sem_open man page on Linux: $ man 3p sem_open. PROLOG This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
man - Unix, Linux Command - Tutorialspoint