Regular Expression Examples
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(Created page with "==Finding Blank Lines== This finds lines that only have spaces! tabs or nothing at all in them: <pre> ^[\t ]*$ </pre> ==Finding Trailing Spaces== This finds spaces at the end o...") |
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| + | [[Regular Expressions]] are very powerful and quite complex tasks can be achieved with just a few characters. The following example Regular Expressions are simple, frequently used expressions that can be adapted for your own purposes: | ||
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==Finding Blank Lines== | ==Finding Blank Lines== | ||
This finds lines that only have spaces! tabs or nothing at all in them: | This finds lines that only have spaces! tabs or nothing at all in them: | ||
| Line 7: | Line 9: | ||
==Finding Trailing Spaces== | ==Finding Trailing Spaces== | ||
| - | This finds spaces at the end of the line: | + | This finds spaces at the end of the line (note that there is a space at the beginning of the expression): |
<pre> | <pre> | ||
+$ | +$ | ||
| + | </pre> | ||
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| + | ==Lines that Contain Only Digits== | ||
| + | This finds lines that have at least one digit and the whole line contains nothing but digits: | ||
| + | |||
| + | <pre> | ||
| + | ^[0-9]+$ | ||
</pre> | </pre> | ||
