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• NAME
• DESCRIPTION
  • How do I find out which operating system I'm running under?
  • How come exec() doesn't return?
  • How do I do fancy stuff with the keyboard/screen/mouse?
  • How do I ask the user for a password?
  • How do I read and write the serial port?
  • How do I decode encrypted password files?
  • How do I start a process in the background?
  • How do I trap control characters/signals?
  • How do I modify the shadow password file on a Unix system?
  • How do I set the time and date?
  • How can I sleep() or alarm() for under a second?
  • How can I measure time under a second?
  • How can I do an atexit() or setjmp()/longjmp()? (Exception handling)
  • Why doesn't my sockets program work under System V (Solaris)? What does the error message "Protocol not supported" mean?
  • How can I call my system's unique C functions from Perl?
  • Where do I get the include files to do ioctl() or syscall()?
  • Why do setuid perl scripts complain about kernel problems?
  • How can I open a pipe both to and from a command?
  • How can I capture STDERR from an external command?
  • Why doesn't open() return an error when a pipe open fails?
  • What's wrong with using backticks in a void context?
  • How can I call backticks without shell processing?
  • Why can't my script read from STDIN after I gave it EOF (^D on Unix, ^Z on MSDOS)?
  • How can I convert my shell script to perl?
  • Can I use perl to run a telnet or ftp session?
  • How can I write expect in Perl?
  • Is there a way to hide perl's command line from programs such as "ps"?
  • I {changed directory, modified my environment} in a perl script. How come the change disappeared when I exited the script? How do I get my changes to be visible?
  • How do I close a process' filehandle without waiting for it to complete?
  • How do I fork a daemon process?
  • How do I make my program run with sh and csh?
  • How do I keep my own module/library directory?
  • How do I find out if I'm running interactively or not?
  • How do I timeout a slow event?
  • How do I set CPU limits?
  • How do I avoid zombies on a Unix system?
  • How do I use an SQL database?
  • How do I make a system() exit on control-C?
  • How do I open a file without blocking?
  • How do I install a CPAN module?
• AUTHOR AND COPYRIGHT