searching regular expressions with special characters like dot using grep

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# 1  
searching regular expressions with special characters like dot using grep

hi everybody

I am a new user to this forum and its previous posts have been very useful. I'm searching in a file using grep for patterns like


i.e. of form

Can anybody help me with this.

Thanks in advance
# 2  
grep -e '^[0-9][0-9]\.[0-9][0-9]\.[0-9][0-9][0-9]$'

Or, if you have a better version of grep than I have:
grep '^([0-9]{2}\.){2}[0-9]{3}$'

# 3  
actually the pattern is in middle of the line and not at the beginning or at end.
so i tried the following options:

1. grep -e '[0-9][0-9]\.[0-9][0-9]\.[0-9][0-9][0-9]' file1

o/p : also gave lines with patterns as 1116.20.233

2. grep '([0-9]{2}\.){2}[0-9]{3}' file1

o/p : no output

format of file1 is

# 4  
Yeah, when you took off the ^ it would have opened up the regexp too much.
Leave the $ on the end and replace the ^ at the start with \=

Should sort it.
# 5  
thanks for help

it is sorted
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