Including binary files in C -- compilation benchmark

#!/bin/bash

avg_time() {
    #
    # usage: avg_time n command ...
    #
    n=$1; shift
    (($# > 0)) || return                   # bail if no command given
    for ((i = 0; i < n; i++)); do
        { time -p "$@" &>/dev/null; } 2>&1 # ignore the output of the command
                                           # but collect time's output in stdout
    done | awk '
        /real/ { real = real + $2; nr++ }
        /user/ { user = user + $2; nu++ }
        /sys/  { sys  = sys  + $2; ns++}
        END    {
                 if (nr>0) printf("%f,%f,%f\n", real/nr, user/nr, sys/nr);
               }'
}

# Generate base file
dd if=/dev/random of=base.bin bs=1m count=1000 >& /dev/null

# Number of trials per file for compilation
TRIALS=3

for i in `seq 1 50`; do
    # Copy small subsection
    dd if=base.bin of=random.bin bs=1m count="$i" >& /dev/null
    # Convert it to a C file and append it to the template
    xxd -i random.bin | cat - template.c > benchmark.c
    printf "$i,"
    avg_time $TRIALS gcc -c benchmark.c
done


## template.c
# #include <stdio.h>
# int main() {
#     char mod = 0;
#     for (int i=0; i<random_bin_len; ++i) {
#         mod += random_bin[i];
#     }
#     printf("%d", mod);
#     return 0;
# }