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puts $argv
set i_file [lindex $argv 0]
set o_file [lindex $argv 1]
set num_b [lindex $argv 2]
puts ""
set fileid_i [open $i_file "r"]
set fileid_o [open $o_file "w+"]
fconfigure $fileid_i -translation {binary binary}
fconfigure $fileid_o -translation {binary binary}
set old_bin [read $fileid_i]
set new_bin {}
for {set i 0} {$i<[string length $old_bin]} {incr i $num_b} {
for {set j $num_b} {$j>0} {incr j -1} {
append new_bin [string index $old_bin [expr $i+($j-1)]]
}
}
for {set i 0} {$i<[string length $old_bin]} {incr i $num_b} {
set binValue [string range $old_bin [expr $i+0] [expr $i+($num_b-1)]]
binary scan $binValue H[expr $num_b*2] hexValue
set binValue [string range $new_bin [expr $i+0] [expr $i+($num_b-1)]]
binary scan $binValue H[expr $num_b*2] hexValue
}
puts -nonewline $fileid_o $new_bin
close $fileid_o
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