UNIX for Dummies Questions & Answers

I have a file and it contains some text and the length is 145. I need to add a string which is of length 8 at the 120th position. Is it possible to add???? Need help on this....

Supposing you talk about 1 line with more than 120 characters... maybe this is the kind you looking for. Just have to adapt the number 5 to your 120 and "sometext" to your string you want to paste in there.

Code:

cat infile
1234567890
sed 's/\(^.\{5\}\)\(.*\)$/\1sometext\2/' infile
12345sometext67890

thank u zaxxon!!!

cat infile
1234567890
sed 's/\(^.\{5\}\)\(.*\)$/\1sometext\2/' infile
12345sometext67890

In case if i want to add one more text in the same line means..i.e
12345sometext67thisistheexample890

how can i get this output.........

Code:

sed 's/\(^.\{5\}\)\(.\{2\}\)\(.*\)$/\1sometext\2thisistheexample\3/' infile
12345sometext67thisistheexample890

thank u very zaxxon !!!!!!!!!! It works fine
The message will be like this....there will two spaces between T and CF
This is the example message 4561232364511111PT CF

Now I want to insert a character M between T and C and also a string say sometext..so the output will be

This is the example message 456123sometext2364511111PTM CF

When I use the command which you mentioned previously...after inserting the character M I am getting two spaces before CF....I need only one space after inserting M....Pls help on this..........