convert_bin2ascii_ply.sh

# install meshio: https://pypi.org/project/meshio/
pip install meshio

# run following in terminal to convert all .ply files from binary to ascii format INPLACE
find . -maxdepth 1 -type f -name "*.ply" -exec meshio-ascii "{}" \;
# . = current directory
# -maxdepth 1  = find files only in current directory and ignore subdirectories
# -type f = type of file to find 'regular file'
# -name "*.ply" = base of filename
# -exec [command] "{}" \;  = execute command on files found. The "{}" is placeholder for filename. 
# The \; is used to separate commands. 
# Space between braces and semicolon is important
# Otherwise it gives error:   find: missing argument to `-exec'