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Full Discussion: sed replace pattern
Top Forums UNIX for Beginners Questions & Answers sed replace pattern Post 302984392 by Beginner101 on Tuesday 25th of October 2016 11:41:16 AM
Old 10-25-2016
thanks greet_sed!
in the second option, the value I want to replace is a variable, not X
so $val=45

I tried this but doesnt resolve $val:
Code:
sed -re 's/\.[0-9]{1,2}'"'"'/.$val/' file

so I used double quotes for sed:
Code:
sed -re "s/\.[0-9]{1,2}'"'"'/.$val/" file

but there seems to a mismatch, it doesnt work wither.

I also want to write back to the same file, so
Code:
sed -i -r

should work right?

---------- Post updated at 11:41 AM ---------- Previous update was at 11:40 AM ----------

thanks greet_sed!SmilieSmilie
in the second option, the value I want to replace is a variable, not X
so $val=45

I tried this but doesnt resolve $val:
Code:
sed -re 's/\.[0-9]{1,2}'"'"'/.$val/' file

so I used double quotes for sed:
Code:
sed -re "s/\.[0-9]{1,2}'"'"'/.$val/" file

but there seems to a mismatch, it doesnt work wither.

I also want to write back to the same file, so
Code:
sed -i -r

should work right?


Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!

Last edited by RudiC; 10-25-2016 at 03:03 PM.. Reason: Added CODE tags.
 

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