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Shell Programming and Scripting

fixed record length

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# 1  
Old 03-27-2006
fixed record length
hello!

I have a file with fixed record length...

format:

123445asdfg 4343777 sfgg

I wanna convert it to

123445,asdfg ,4343,777 ,sfgg

is there any way to do it?

sed/grep/awk??

at the moment I use sed -e 's_ \([^ ]\)_,\1_g'
but it works only if there are spaces between records...

any idea to deal with??

thanks for any help.
# 2  
Old 03-27-2006
it seems you know awk,
so you can use substr function of awk,
do man awk for more details

Gaurav
# 3  
Old 03-27-2006
Code:
echo "123445asdfg 4343777 sfgg"|awk '{print substr($1,1,6)","substr($1,7,11)" ,"substr($2,1,4)","substr($2,5,7)" ,"$3}'

123445,asdfg ,4343,777 ,sfgg

# 4  
Old 03-27-2006
thanks a lot!

is there a more generic way to do it?
instead of $1/$2....to parse the whole line?
becouse like this I will have to change the script each time I use it for another file.

thanks for any advise.
# 5  
Old 03-27-2006
if you are sure that the no. of characters in the string is going to be constant, then you can first use sed to remove the blank spaces fron it and then use the awk substr() fn to print the required output.

Quote:
sed 's/[ ]*//g' filename > newfile
awk '{print substr(....)}' newfile
post back if still some confusion
Gaurav
# 6  
Old 03-27-2006
it doesn't solve the problem...

in each file I have to change
substr parameters
instead of substr($1,7,11)" ,"substr($2,1,4)","substr($2,5,7)"

I want substr($the_whole_line,7,11),substr($the_whole_line,12,17)

ls that possible?

thanks.
# 7  
Old 03-27-2006
fields in a record which is lets say 30 chars another is 40 may contain spaces...
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