add stfu command and its prerequisites

home/-shrc

@@ -194,6 +194,32 @@ eashare() {
     printf "%s" "$_REMOTE_DOMAIN/$_REMOTE_DIR/$dest" > /dev/clipboard
 }
 
+echo2() {
+    local IFS=" "
+    printf "%s\n" "$*" >&2
+}
+
+note() {
+    local IFS=" "
+    printf "\033[1m%s\033[0m\n" "$*" >&2
+}
+
+stfu() {
+    local ret=0
+    "$@" > .stdout 2> .stderr || ret=$?
+    if test "$ret" -ne 0; then
+        printf "command failed with exit status %s:\n" "$ret" >&2
+        echo2 "$@"
+        echo2
+        note '$ tail -n 20 .stdout'
+        tail -n 20 .stdout >&2
+        echo2
+        note '$ tail -n 20 .stderr'
+        tail -n 20 .stderr >&2
+        return "$ret"
+    fi
+}
+
 # sources {{{1
 
 if [ $FANCY -eq 1 ]; then