gistfile1.txt

#!/bin/bash
 
FILE=$1
HOSTNAME=$2
USER=cfeduke
SPLIT_SIZE=3145728 # bytes, 3 MiB (1024*1024*3)
SCP_MAX_COUNT=4    # no. of maximum scps at once
 
cp $FILE /tmp
cd /tmp
FILE=$(basename $FILE)
split -b$SPLIT_SIZE $FILE file-part-
 
scp_count=0
for part in file-part-*; do
  scp -B "$part" $HOSTNAME:~ &
  scp_count=$(($scp_count+1))
  if [ "$scp_count" -gt $SCP_MAX_COUNT ]; then
    wait
    $scp_count=0
  fi
done
 
if [ "$scp_count" -gt 0 ]; then
  wait
fi
 
ssh -o "BatchMode yes" -t $HOSTNAME "cat /home/$USER/file-part-* >> /home/$USER/$FILE && rm /home/$USER/file-part-*"
rm file-part-*