Check we have ed(1)

1 files changed, 4 insertions, 0 deletions

diff --git a/bin/edda b/bin/edda
index 2bfe994e..f0d716d7 100755
--- a/bin/edda
+++ b/bin/edda
@@ -27,6 +27,10 @@ if ! (($#)) ; then
     exit 1
 fi
 
+# Need ed(1) -- some systems daring to call themselves UNIX-like don't have it
+# installed by default. What's POSIX, precious?
+hash ed || exit
+
 # Parse options out, give help if necessary
 declare -a opts
 for arg ; do