srand EXPR srand Sets and returns the random number seed for the rand operator. The point of the function is to "seed" the rand function so that rand can produce a different sequence each time you run your program. When called with a parameter, srand uses that for the seed; otherwise it (semi-)randomly chooses a seed. In either case, starting with Perl 5.14, it returns the seed. To signal that your code will work only on Perls of a recent vintage: use 5.014; # so srand returns the seed If sran

NAME SYNOPSIS DESCRIPTION SEE ALSO NAME instmodsh - A shell to examine installed modules SYNOPSIS instmodsh DESCRIPTION A little interface to ExtUtils::Installed to examine installed modules, validate your packlists and even create a tarball from an installed module. SEE ALSO ExtUtils::Installed

NAME SYNOPSIS DESCRIPTION AUTHOR COPYRIGHT NAME Net::Domain - Attempt to evaluate the current host's internet name and domain SYNOPSIS use Net::Domain qw(hostname hostfqdn hostdomain domainname); DESCRIPTION Using various methods attempt to find the Fully Qualified Domain Name (FQDN) of the current host. From this determine the host-name and the host-domain. Each of the functions will return undef if the FQDN cannot be determined. hostfqdn () Identify and return the FQDN of the current host

socketpair SOCKET1,SOCKET2,DOMAIN,TYPE,PROTOCOL Creates an unnamed pair of sockets in the specified domain, of the specified type. DOMAIN, TYPE, and PROTOCOL are specified the same as for the syscall of the same name. If unimplemented, raises an exception. Returns true if successful. On systems that support a close-on-exec flag on files, the flag will be set for the newly opened file descriptors, as determined by the value of $^F. See $^F in perlvar. Some systems defined pipe in terms of socket

NAME DESCRIPTION SPECIAL NOTESmake Version caveat Dynamic Loading versus Static Loading Threads and PERL_NO_GET_CONTEXT TUTORIALEXAMPLE 1 EXAMPLE 2 What has gone on? Writing good test scripts EXAMPLE 3 What's new here? Input and Output Parameters The XSUBPP Program The TYPEMAP file Warning about Output Arguments EXAMPLE 4 What has happened here? Anatomy of .xs file Getting the fat out of XSUBs More about XSUB arguments The Argument Stack Extending your Extension Documenting your Extension In

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wait Behaves like wait(2) on your system: it waits for a child process to terminate and returns the pid of the deceased process, or -1 if there are no child processes. The status is returned in $? and ${^CHILD_ERROR_NATIVE} . Note that a return value of -1 could mean that child processes are being automatically reaped, as described in perlipc. If you use wait in your handler for $SIG{CHLD}, it may accidentally wait for the child created by qx() or system(). See perlipc for details. Portability

NAME DESCRIPTION SECURITY VULNERABILITY CONTACT INFORMATION SECURITY MECHANISMS AND CONCERNSTaint mode Laundering and Detecting Tainted Data Switches On the "#!" Line Taint mode and @INC Cleaning Up Your Path Security Bugs Protecting Your Programs Unicode Algorithmic Complexity Attacks SEE ALSO NAME perlsec - Perl security DESCRIPTION Perl is designed to make it easy to program securely even when running with extra privileges, like setuid or setgid programs. Unlike most command line shells,

closedir DIRHANDLE Closes a directory opened by opendir and returns the success of that system call.

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