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put a string before a searched string

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# 1  
Old 07-18-2009
put a string before a searched string
hi all!

i have a working that looks like this...

file1
MALE JOHN
MALE ANJO
FEMALE ANNE
MALE JAMES
FEMALE HONEY
FEMALE IZA

what i want to do is insert "M" when the first string is "MALE" and insert "F" when the first string is "FEMALE".

file1
M MALE JOHN
M MALE ANJO
F FEMALE ANNE
M MALE JAMES
F FEMALE HONEY
F FEMALE IZA

i tried awk:
Code:
 
if($1 == "MALE")
{print "M"" "$1" "$2}
else
{print "F"" "$1" "$2}


but is there any other one-liner code that would do the job? output should overwrite the working file. thanks!
# 2  
Old 07-18-2009
Something like this:

Code:
awk '{print substr($1,1,1) FS $0}' file

# 3  
Old 07-18-2009
@franklin: actually, it's not the first letter that should be inserted. im sorry if i mislead you, it's just an example. Thanks!
# 4  
Old 07-18-2009
Quote:
Originally Posted by kingpeejay
@franklin: actually, it's not the first letter that should be inserted. im sorry if i mislead you, it's just an example. Thanks!
Ok, then you should give a more elaborate example.

Regards
# 5  
Old 07-18-2009
for example: if the first string of a line is "MALE", then insert a string like "AM" before it.
# 6  
Old 07-18-2009
What are you trying to accomplish, can you give an explanation of your real world problem?

Regards
# 7  
Old 07-18-2009
i have this working file that i can't find all the values i needed. so, what i want to do is to put that missing value before the first string of each line.
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