Change Encoding and Move Files in ONE bash Script

Question

I'm currently going through a manual process of encoding a file list from DOS to Unix so that I can move files from x to y. I would like this process automated in one script but I'm a total noob.

This is the pseudo-code:

1. Convert list.txt to unix encoding (:set ff=unix)

2. Move files from /folder that are present in list.txt to /folder2 (in other words, /folder contains a big list, but i only want the files in list.txt to be moved)

   this is how i'm moving the files: while read line ; do cp /opt/home/first.last/Runs/clientPDFs/${line}.pdf ~/folder2 ; done < ~/list.txt

If possible I would like the script to check for list.txt first. If there isn't one it should move ALL files.

if list.txt then while read line ; do cp /opt/home/first.last/Runs/clientPDFs/${line}.pdf ~/folder2 ; done < ~/list.txt

else while read line ; do cp /opt/home/first.last/Runs/clientPDFs/${line}.pdf ~/folder2

Answer 1

I'd probably structure it something like this:

filelist="list.txt"
srcdir="/opt/home/first.last/Runs/clientPDFs"
dstdir="$HOME"

if [ -r "$filelist" ]; then
  sed 's/\r$//' "$filelist" | xargs -I{} cp -t "$dstdir"/ -- "$srcdir"/{}.pdf
else
  cp -t "$dstdir"/ -- "$srcdir"/*.pdf
fi

You could append the pdf extension within the sed command if you prefer i.e.

  sed 's/\r$/.pdf/' "$filelist" | xargs -I{} cp -t "$dstdir" -- "$srcdir"/{}