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Limit string length with sed

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# 1  
Old 11-26-2013
Limit string length with sed
Hi. I'm trying to learn sed. I want to limit the length of a string. I tried this:

Code:
sed -n 's/^\(...........................\).*/\1/p' textfile.txt

This works fine, but how do I give it as a range rather than putting a hundred dots?
I'd like to limit the number of characters to 144 for twitter. I'd like to stick to sed to learn it. Thanks.
# 2  
Old 11-26-2013
Try this:

Code:
sed 's/^\(.\{144\}\).*/\1/g' textfile.txt

And if you want to learn sed this would be a good place to start:

Code:
http://www.grymoire.com/Unix/Sed.html

Good Luck
This User Gave Thanks to chacko193 For This Post:
troglodytes
# 3  
Old 11-26-2013
Try : something like this

Code:
$ echo "123456789101112131415" | sed 's/^.\{5\}//g'
6789101112131415

$ echo "123456789101112131415" | sed 's/^.\{8\}//g'
9101112131415

$ echo "123456789101112131415" | sed 's/^.\{10\}//g'
01112131415

This User Gave Thanks to Akshay Hegde For This Post:
troglodytes
# 4  
Old 11-26-2013
Thank you both!
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