Hello, i'm new with the scripting on unix and i need such script or maby something to that way: I need to change the the first word in every new line to a given word. Using just /bin/sh ( not using sed, awk, perl and ect). I would be very grateful.

I won't do all of your homework, but I'll do the hard part. Assuming a field separator of white space, this reads the first word and the restofthe line: #/bin/sh while read firstword restofline do echo $firstword firstword="whatever" done < datafile.txt # All you have to do is glue firstword and restofline back together.

thanks for reply, i have it done. But now i'am interested to write it usig awk and sed. Maby somebody could help me with that?

# for awk, look at section 3.4 changing the contents of a field: http://www.gnu.org/software/gawk/ma... # IMO, sed isn't the best choice for changing fields, but try this link: http://www.grymoire.com/Unix/Sed.html