I’m trying to figure out how to grep a time stamp read from a file that consists of a number with a decimal, but I can’t seem to get the output I’m looking for, any help would be great! Thanks in advance.
Example:
[Time since reference or first frame: 691.933275000 seconds] [Time since reference or first frame: 691.953127000 seconds] [Time since reference or first frame: 691.992275000 seconds] [Time since reference or first frame: 691.997590000 seconds]
The result should be:
691.933275000 691.953127000 691.992275000 691.997590000
What I’ve Tried:
grep '[0-9].[0-9]' tmp.txt
grep -Eo '[0-9].[0-9]' tmp.txt
grep -Eo '([0-9]{1,10}[.]){1,10}[0-9]' tmp.txt
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Answer
you can use awk to split the file to retrieve those fields which has decimal number
cat file_name | awk '{print $7}'