scripting
 

I've got a large text file, and i would like to replace some strings on each line, e.g.

i've got lines like these:

a b c
a b c
a b c

i would like to move the strings so that the lines end up looking like this:

b a c
b a c
b a c

"b", "a" and "c" are just variables, the actual content change, but the positioning of the content are the same.

My question is, What commands should i use to solve my problem?

If the strings are structured like records, you can easily use awk to print out the fields in any order you want.

Are you trying to change things based on position or content? e.g., do you want to:

--move all occurrences of "b" to the front.

OR

--move the second field to the front.