commit 12fcba2f80034356e75d73380d22012fd72476a8
from: Omar Polo <op@omarpolo.com>
date: Sun Feb 27 16:24:45 2022 UTC

use shell built-in `command' instead of which(1)

it's specified by POSIX AFAIK and requires less redirections.

commit - cd3e28ffe4e39716849cb289f3bb0cf76634fbc3
commit + 12fcba2f80034356e75d73380d22012fd72476a8
blob - 02b8eb211eb3c2d1e7d2f072d17e8b98173bacf1
blob + 6fc6273a73d1e0b915c51d88657ef811d11b2fce
--- regress/sha
+++ regress/sha
@@ -3,11 +3,11 @@
 # USAGE: ./sha in out
 # writes the sha256 of in to file out
 
-if which sha256 2>/dev/null >/dev/null; then
+if command -v sha256 >/dev/null; then
 	exec sha256 < "$1" > "$2"
 fi
 
-if which sha256sum 2>/dev/null >/dev/null; then
+if command -v sha256sum >/dev/null; then
 	sha256sum "$1" | awk '{print $1}' > "$2"
 	exit $?
 fi