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Lecture 4

Lecture 4. Regular Expressions grep and sed. Previously. Basic UNIX Commands Files: rm, cp, mv, ls, ln Processes: ps, kill Unix Filters cat , head , tail , tee, wc cut , paste find sort , uniq comm , diff, cmp tr. Subtleties of commands. Executing commands with find

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908 views • 65 slides

Lecture 4

Lecture 4. Regular Expressions grep and sed intro. Previously. Basic UNIX Commands Files: rm, cp, mv, ls, ln Processes: ps, kill Unix Filters cat , head , tail , tee, wc cut , paste find sort , uniq comm , diff, cmp tr. Subtleties of commands. Executing commands with find

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610 views • 42 slides

Using regular expressions

Using regular expressions. Search for a single occurrence of a specific string. Search for all occurrences of a string. Approximate string matching. Forming RegExps. Strings Variables Patterns. Strings and Variables. /Joey Ramone/ - match a specific string.

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Regular Expression

Original Notes by Song Guo. Regular Expression. What Regular Expressions Are Exactly - Terminology. a regular expression is a pattern describing a certain amount of text.

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Negated character classes - PowerPoint PPT Presentation

Lecture 4

Lecture 4

Using regular expressions

Regular Expression