See also Spelling Checkers and Correctors - Methods of filtering and processing to check and correct spelling errors.

See also: Sorting Algorithms

See also: Data integrity and Security, Checksums and Digests - cryptography, message digests, etc.

Data Compression

Up to File System Access - Gateway topic to file system (files and directory) access and operations.

How do I count the number of lines in a file?

How can I print out a word-frequency or line-frequency summary?

See Also

perl5 module to scan C language files for easily recognized constructs. p5-C-Scan-0.74 Perl5 module to scan C language files for easily recognized constructs

Other Applications and Utilities

(PERL predefined variable) input_line_number HANDLE EXPR The current input line number for the last file handle from which you read (or performed a seek or tell on).

(PERL predefined variable) input_record_separator HANDLE EXPR The input record separator, newline by default.

(PERL predefined variable) output_field_separator HANDLE EXPR The output field separator for the print operator.

(PERL predefined variable) output_record_separator HANDLE EXPR The output record separator for the print operator. Ordinarily the print operator simply prints out the comma-separated fields you specify, with no trailing newline or record separator assumed.

(Perl builtin function) readline EXPR Reads from the file handle EXPR.

C::Scan - Scans C programs for easily recognized constructs. For instance, you can use it to extract a list of include files used by a C program, and all the include files used by THOSE include files, and so on. Uses the Data::Flow module. [Perl] {oss}

Sprite - Maniuplates simple text-delimited databases. [Perl] {oss}

Parse::Lex - An object-oriented generator of lexical analyzers. Use it to create parsers for "little languages" that you create. Documentation in French. [Perl] {oss}

Parse::RecDescent - Like the Unix yacc utility, this module generates recursive-descent parsers. [Perl] {oss}

SGMLS - Classes for use with the SGMLS and NSGMLS parsers. (SGML stands for Standard Generlized Markup Language. HTML is almost an example of an SGML.) [Perl] {oss}

HTML::FormatText - Convert HTML to plain text. Part of the libwww bundle. [Perl] {oss}

Other Libraries, Functions, and Components