The problem is that do_work.sh
runs ssh
commands and by default ssh
reads from stdin which is your input file. As a result, you only see the first line processed, because the command consumes the rest of the file and your while loop terminates.
This happens not just for ssh
, but for any command that reads stdin, including mplayer
, ffmpeg
, HandBrakeCLI
, and more.
To prevent this, pass the -n
option to your ssh
command to make it read from /dev/null
instead of stdin. Other commands have similar flags, or you can universally use < /dev/null
.