Re: Pipe using subshells, variables not saved

[Greg Wooledge]

On Fri, Mar 03, 2017 at 10:04:23PM -0800, Misaki wrote:
> > reason for piping:
> > echo wat | for i in $(< /dev/stdin); do declare -g new="$i"; done
> >
> > (using find instead of echo, not sure if better way to loop)

while IFS= read -r file; do blah "$file"; done < <(find . -type f)

That's compatible with any filenames that don't contain newlines.
To be 100% compatible with ALL possible filenames, you need to use
a NUL-delimited stream.  On GNU/BSD systems:

while IFS= read -rd '' file; do blah "$file"; done < <(find . -type f -print0)

On recent-enough POSIX systems:

while IFS= read -rd '' file; do blah "$file"; done \
    < <(find . -type f -exec printf '%s\0' {} +)

See also http://mywiki.wooledge.org/BashFAQ/024

See also http://mywiki.wooledge.org/DontReadLinesWithFor