RU.UNIX.PROG FAQ - приложение 2 (comp.unix.programmer FAQ question list) snapshot

Unix Programming FAQ
Question list only

Archive-Name: unix-faq/programmer/faq
Comp-unix-programmer-Archive-Name: faq

1. Process Control
  1.1 Creating new processes: fork()
    1.1.1 What does fork() do?
    1.1.2 What's the difference between fork() and vfork()?
    1.1.3 Why use _exit rather than exit in the child branch of a fork?
  1.2 Environment variables
    1.2.1 How can I get/set an environment variable from a program?
    1.2.2 How can I read the whole environment?
  1.3 How can I sleep for less than a second?
  1.4 How can I get a finer-grained version of alarm()?
  1.5 How can a parent and child process communicate?
  1.6 How do I get rid of zombie processes?
    1.6.1 What is a zombie?
    1.6.2 How do I prevent them from occuring?
  1.7 How do I get my program to act like a daemon?
  1.8 How can I look at process in the system like ps does?
  1.9 Given a pid, how can I tell if it's a running program?
  1.10 What's the return value of system/pclose/waitpid?
  1.11 How do I find out about a process' memory usage?
  1.12 Why do processes never decrease in size?
  1.13 How do I change the name of my program (as seen by `ps')?
  1.14 How can I find a process' executable file?
    1.14.1 So where do I put my configuration files then?
  1.15 Why doesn't my process get SIGHUP when its parent dies?
  1.16 How can I kill all descendents of a process?

2. General File handling (including pipes and sockets)
  2.1 How to manage multiple connections?
    2.1.1 How do I use select()?
    2.1.2 How do I use poll()?
    2.1.3 Can I use SysV IPC at the same time as select or poll?
  2.2 How can I tell when the other end of a connection shuts down?
  2.3 Best way to read directories?
  2.4 How can I find out if someone else has a file open?
  2.5 How do I `lock' a file?
  2.6 How do I find out if a file has been updated by another process?
  2.7 How does the `du' utility work?
  2.8 How do I find the size of a file?
  2.9 How do I expand `~' in a filename like the shell does?
  2.10 What can I do with named pipes (FIFOs)?
    2.10.1 What is a named pipe?
    2.10.2 How do I create a named pipe?
    2.10.3 How do I use a named pipe?
    2.10.4 Can I use a named pipe across NFS?
    2.10.5 Can multiple processes write to the pipe simultaneously?
    2.10.6 Using named pipes in applications

3. Terminal I/O
  3.1 How can I make my program not echo input?
  3.2 How can I read single characters from the terminal?
  3.3 How can I check and see if a key was pressed?
  3.4 How can I move the cursor around the screen?
  3.5 What are pttys?
  3.6 How to handle a serial port or modem?
    3.6.1 Serial device names and types
    3.6.2 Setting up termios flags c_iflag c_oflag c_cflag c_lflag c_cc

4. System Information
  4.1 How can I tell how much memory my system has?
  4.2 How do I check a user's password?
    4.2.1 How do I get a user's password?
    4.2.2 How do I get shadow passwords by uid?
    4.2.3 How do I verify a user's password?

5. Miscellaneous programming
  5.1 How do I compare strings using wildcards?
    5.1.1 How do I compare strings using filename patterns?
    5.1.2 How do I compare strings using regular expressions?
  5.2 What's the best way to send mail from a program?
    5.2.1 The simple method: /bin/mail
    5.2.2 Invoking the MTA directly: /usr/lib/sendmail Supplying the envelope explicitly Allowing sendmail to deduce the recipients

6. Use of tools
  6.1 How can I debug the children after a fork?
  6.2 How to build library from other libraries?
  6.3 How to create shared libraries / dlls?
  6.4 Can I replace objects in a shared library?
  6.5 How can I generate a stack dump from within a running program?