Regular Expression Post: 302273600

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Is it possible to combine a regular expression with a aritmetical expression? For example, taking a 8-numbers caracter sequece and casting each output of a grep, comparing to a constant. THX!

2. Programming

What does the regular expression ['(^[^~]+~).*'] mean?

What does the regular expression +~).*'] mean while using it with regexec.When the string "RCHNUSNT35C~rs07/ASM-RS07" is used with the regular expression +~).*'] regexec gives an error. I know what regexec does,but i do not understand what this expression means wrt to this string... any help...

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I currently list and sort all the files in a directory which begin with an Upper Case C and end with the extension '#finished#'. Here is the command I use: ls -tr $currentDir/*.#finished# what i need to do now is list all the files in a directory that begin with upper case C and end...

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6. Programming

Perl: How to read from a file, do regular expression and then replace the found regular expression

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7. UNIX for Advanced & Expert Users

sed: -e expression #1, char 0: no previous regular expression

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8. UNIX for Dummies Questions & Answers

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Hi, I am quite knew to scripting and I am trying to get a regular expression to work to check that a user enters a valid version number such as 1 or 1.1 or 12.3 etc. I dont seem to be able to get it to work as it picks up versions such as 1.......2. I only want it to work with a single dot....

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