set debug true
set echo true

# Create a backup the files we will modify
export --filename MF/DF.GSM/EF.LOCI > restore_ef_loci.script.tmp

# Select an arbitrary file to work with
select MF/DF.GSM/EF.LOCI

# Clear file contents
update_binary ffffffffffffffffffffff
read_binary > test_binary_sim.tmp

# Write some short pattern to the file
update_binary 01234567890abcdeff
read_binary >> test_binary_sim.tmp

# Write some pattern to the file
update_binary 01234567890abcdeffaaaa
read_binary >> test_binary_sim.tmp

# Write some short pattern to the file, we expect the tail to remain unchanged
update_binary 001abcd344
read_binary >> test_binary_sim.tmp

# Restore modified files to their original state
run_script restore_ef_loci.script.tmp