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Replace x-y character in line

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# 1  
Old 04-26-2013
Replace x-y character in line
I have a file which has n number of lines, i want to replace 3rd line position 3-5 to some text.

Code:
111111111111111111
222222222222222222
333333333333333333
444444444444444444
 
expected output
 
111111111111111111
222222222222222222
33abc3333333333333
444444444444444444

it is not mandatory that line starts with 33.. it can be any text
Last edited by greenworld123; 04-26-2013 at 11:37 AM..
# 2  
Old 04-26-2013
Code:
awk 'NR==3{$0=substr($0,1,2) "abc" substr($0,6)}1' file

# 3  
Old 04-26-2013
it is giving error as below

Code:
awk: syntax error near line 1
awk: bailing out near line 1

# 4  
Old 04-26-2013
In SunOS or Solaris use /usr/xpg4/bin/awk or nawk
# 5  
Old 04-26-2013
its working .. can u explain the syntax
# 6  
Old 04-26-2013
Code:
/usr/xpg4/bin/awk '

        NR == 3 {                                    # If total Number of Records read == 3
           $0 = substr($0, 1, 2) "abc" substr($0, 6) # Set current record $0 = chars 1-2 followed by "abc" followed by chars 6-whole suffix string
        }

        1                                            # 1 == true (default action is to print current record)
' file

I hope this helps.
# 7  
Old 04-26-2013
Code:
sed '3s/\(..\).../\1abc/'

Regards,
Alister
This User Gave Thanks to alister For This Post:
Yoda
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