usergen: Remove dependency against sha256sum(1)

sha256sum(1) is a GNU utility that might not be available under some
POSIX systems. Since OpenSSL is already a dependency, it makes sense to
reuse it to generate SHA256 digests.

1 files changed, 1 insertions, 1 deletions

diff --git a/usergen b/usergen
index 0052107..d4b89c4 100755
--- a/usergen
+++ b/usergen
@@ -64,7 +64,7 @@ ROUNDS=1000
 for i in $(seq $ROUNDS)
 do
     printf "\r%d/$ROUNDS" $i >&2
-    PWD=$(printf '%s' "$PWD" | to_bin | sha256sum | cut -d' ' -f1)
+    PWD=$(printf '%s' "$PWD" | to_bin | openssl sha256 -r | cut -d' ' -f1)
 done
 
 echo >&2