Perl Cookbook, Second Edition
| [SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] factorial( ) failure, returning from subroutines false values fcntl( ), return values FETCH( ) fetching URLs from Perl scripts <FH> line input operator FIFOs (named pipes) file access 2nd [See also directories file contents][See also directories file contents] access modes 2nd copying and moving files editing files [See file contents] filehandles 2nd caching open copying printing to multiple reading a line from, without blocking reading from multiple filtering filename input command-line options flushing output locking files netlock program region-specific locks non-blocking I/O opening and closing file descriptors processing all files in directories recursively storing files in program text timestamps unread bytes, determining number of file contents 2nd [See also directories; file access] adding records to wtmp file comparing two files configuration files, reading continually growing files, reading converting Microsoft files to Unicode counting lines, paragraphs, and records extracting single line fixed-length records reading I/O layers modifying with -i switch with temporary files without temporary files processing all words in processing binary files random access input/output updating random lines from, selecting randomizing line order reading backwards lines with continuation characters null-terminated strings from binary files reading and writing hash records to file reading and writing Unicode from filehandles setting default I/O layers tctee program testing for trustworthiness treating files as arrays strings as files variable-length text fields viewing lastlog file information file descriptors, opening and closing file extensions __FILE__ symbol file test operators File::Basename module File::chmod module File::Compare module File::Copy module 2nd File::Find module removing directories recursively File::Glob module File::KGlob module File::LockDir module File::NFSLock module File::Path module File::stat module 2nd File::Temp module FileCache module filehandles autovivified caching comparing copying local non-blocking I/O passing 2nd printing to multiple simultaneously reading a line from, without blocking from many reading and writing Unicode from reporting filenames in errors seek offset standard storing in variables tied using filename as filenames expanding tildes in filtering as input command-line options globbing multiple, for same file parsing renaming reporting in errors sorting 2nd unusual, opening files with using as filehandle fileparse( ) files binary reading null-terminated strings C header, translating with h2ph comparing file contents configuration, reading creating temporary deleting last line of downloading, resuming HTTP GET locking advisory locking netlock program Microsoft, converting to Unicode opening processing all in directories random-access, updating RSS, reading and writing storing in program text treating as arrays strings as with unusual filenames, opening uploaded, receiving with mod_perl handler XML, larger than available memory, processing filesystem [See directories] filtering filenames as input command-line options output XML FindBin module finddepth( ) finding fresh hyperlinks most common anything patterns [See regular expressions] text and elements in XML documents versions and descriptions of modules findnodes( ) vs. getElementsByTagName( ) FIONREAD call firewalls, fetching web pages through fixed-length records flat-file index program reading FixNum class fixstyle program flat file index program flattened lists floating-point numbers comparing rounding flock( ) compared to SysV lockf( ) floor( ) flushing output fmt program fnctl( ), locking files folded_demo program fonts, Unicode, support for foodfind program =for escape pod directive ForceArray option foreach loop printing to multiple filehandles renaming files traversing hashes fork( ) 2nd [See also processes] avoiding zombie processes closing sockets after forking servers non-forking servers preforking servers shell escapes format_string( ) forms, HTML saving and emailing sticky widgets submitting forward slash (/) /e substitution modifier 2nd /g pattern-matching modifier finding Nth matches where last pattern ended /i pattern-matching modifier /m pattern-matching modifier multiple lines /o pattern-matching modifier /s pattern-matching modifier multiple lines /x pattern modifier comments in regular expressions root directory Frame widget, Tk FTP clients full-screen mode functions interpolating within strings vs. methods private for variables references to types of fuzzy matching fwdport program |