Shell Programming and Scripting

Hi,
I have a big text file with m columns and n rows. The format is like:

STF123450001000200030004STF123450005000600070008STF123450009001000110012
STF234560345002208330154STF234590705620600070080STF234567804094562357688
STF356780001000200030004STF356780005000600070080STF356780800094562657687
....
....
....
....

What I want is read the file, split the first line, write the first STF section to file1 and second STF section to file 2 and so on; then read the second line, append the first STF section to file1 as the second line and second STF section to file2 as the second line and so on....

Thanks!

Code:

cut -c1-24 infile > out1
cut -c25-48 infile > out2
cut -c49- infile > out3

Or if the actual data's wider, this uses "STF" as its field separator and prints different field numbers to different filenames:

Code:

awk -v FS="STF" '{ for(N=2; N<=NF; N++) print FS $N >"file"N }'

to make file1, file2, ...