Find numbers after specific text in a string with RegEx -


i have multiline string following:

2012-15-08 07:04 bla bla bla blup 2012-15-08 07:05 *** error importing row no. 5: import of line failed because bla bla 2012-15-08 07:05 text don't want search... 2012-15-08 07:06 text don't want search... 2012-15-08 07:06 *** error importing row no. 5: import of line failed because bla bla 2012-15-08 07:07 import has finished bla bla

what want extract row numbers have errors of regularexpression (with powershell). need find number between "*** error importing row no. " , following ":" give me row number.

i looked @ various other regex question honest answers chinese me.

tried built regex of http://regexr.com/ haven't been successful far, example following pattern:

"error importing row no. "(.?)":"

any hints?

try expression:

"error importing row no\. (\d+):"

demo

here need understand quantifiers , escaped sequences:

  • . character; want numbers, use \d; if meant period character must escape backslash (\.)
  • ? 0 or 1 character; isn't want, can here error on line 10 , take "1"
  • + 1 or many; suffice us
  • * character count; must take care when using .* can consume entire input

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