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Printing 1st column to lower case using awk

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# 1  
Old 05-18-2009
Printing 1st column to lower case using awk
I want to print the 1st field in a comma seperated file to lower case and the rest the case they are.
I tried this

Code:
nawk -F"," '{print tolower($0)}' OFS="," file


this converts whole line in to lower case i just want the first column to be converted.


The below doesnt work because in my file each record has different number of fields and i want all of them.

Code:
nawk -F"," '{print tolower($1),$2,$3,$4}' OFS="," file

Quote:
file:
abc,def,,,,,,
def,kik,iil,,,,,,,,
lmn,iio,oiu,kii,

Ouptut:
ABC,def,,,,,,
DEF,kik,iil,,,,,,,,
LMN,iio,oiu,kii,
Appreciate help
# 2  
Old 05-18-2009
so why don't you 'tolower' JUST the FIRST field and print out the the entire RECORD?
Quote:
tolower(s)
Return a string based on the string s. Each character
in s that is an upper-case letter specified to have a
tolower mapping by the LC_CTYPE category of the
current locale will be replaced in the returned string
by the lower-case letter specified by the mapping.
Other characters in s will be unchanged in the
returned string.
# 3  
Old 05-18-2009
Quote:
Originally Posted by vgersh99
so why don't you 'tolower' JUST the FIRST field and print out the the entire RECORD?
you mean this right?
Code:
$1=toupper($1)

and not this
Code:
print toupper($1),$0

# 4  
Old 05-18-2009
Quote:
Originally Posted by ghostdog74
you mean this right?
Code:
$1=toupper($1)

and not this
Code:
print toupper($1),$0

yes, but wanted the OP to come up with the solution Smilie
# 5  
Old 05-18-2009
Code:
awk -F, '{$1=toupper($1);print}' OFS="," filename



cheers,
Devaraj Takhellambam
# 6  
Old 05-18-2009
Quote:
Originally Posted by vgersh99
yes, but wanted the OP to come up with the solution Smilie
oopsSmilie my bad
# 7  
Old 05-18-2009
Quote:
Originally Posted by vgersh99
yes, but wanted the OP to come up with the solution Smilie
Code:
nawk -F"," 'tolower($2) == "def" {$1=tolower($1)}1' OFS="," file

I am using above but this dosnt converts first field to lower case.

Help is appreciated
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