transfer.sh

#!/bin/bash

USAGE=$(
  cat <<EOF
Description: Bash tool to transfer files from the command line.
Usage: transfer.sh [-d | -h | -v] [file1 ...]
  -d  dir_name file_id file_name  Download file
  -h  Show the help message
  -v  Get the tool version
Examples:
Upload test.txt and test2.txt files
  ./transfer.sh test.txt test2.txt
Download file test.txt to directory ./test with id on the remote Mij6ca
  ./transfer.sh -d ./test Mij6ca test.txt
EOF
)

currentVersion="1.23.0"

httpSingleUpload() {
  response=$(curl -A curl --upload-file "$1" "https://transfer.sh/$2") || {
    echo "Failure!"
    return 1
  }
}

printUploadResponse() {
  fileID=$(echo "$response" | cut -d "/" -f 4)
  cat <<EOF
Transfer File URL: $response
EOF
}

singleUpload() {
  filePath=$(echo "$1" | sed s:"~":"$HOME":g)
  if [ ! -f "$filePath" ]; then {
    echo "Error: invalid file path"
    return 1
  }; fi
  tempFileName=$(echo "$1" | sed "s/.*\///")
  echo "Uploading $tempFileName"
  httpSingleUpload "$filePath" "$tempFileName"
}

singleDownload() {
  echo "Downloading to $2 from $1"
  curl --progress-bar "$1" -o "$2"
}

getopts "dhv" opt
case "$opt" in
h)
  echo "$USAGE" && exit
  ;;
v)
  echo $currentVersion && exit
  ;;
d)
  url="https://transfer.sh/$3/$4"
  file="$2$4"
  singleDownload "$url" "$file"
  exit
  ;;
esac

for file in $@; do
  singleUpload "$file" || exit 1
  printUploadResponse
done