On 2020-04-10 16:09, Peng Yu wrote:
> Hi,
>
> I'd like to look for a file by its name in the current directory. If
> not found, go the the parent and look for it again. If not go up one
> level again and look for it, ... until it is found (or until a given
> level is reached). If the file is not found, return an error.
>
> The resulted path should be relative to the original current directory.
>
> Is there a way to do this easily with find? Thanks.
Hi Peng,
I'm afraid find(1) is only searching "down" the current hierarchy, but
not "up" until "/". However once would involve find(1) here, it would
just be degraded to testing whether the file exist.
Instead, I'd go with a shell script like this:
---8<---8<---8<---8<---8<---8<---8<---8<---8<---8<---8<---
#!/bin/sh
f="$1" \
&& test -n "$f" \
|| { echo "Usage: $0 FILE" >&2; exit 1; }
p="."
# Search until the parent is identical to the current directory (='/').
until [ "$p" -ef "$p/.." ]; do
if [ -e "$p/$f" ]; then
echo "$p/$f"
exit 0
fi
p="$p/.."
done
# Now we're in the '/' dir; check once again.
if [ -e "$p/$f" ]; then
echo "$p/$f"
exit 0
fi
echo "'$f' not found" >&2
exit 1
--->8--->8--->8--->8--->8--->8--->8--->8--->8--->8--->8---
Have a nice day,
Berny
