1 files changed, 36 insertions, 0 deletions
diff --git a/yarns/900-implements.yarn b/yarns/900-implements.yarn
index 57f52aa..26a05a7 100644
--- a/yarns/900-implements.yarn
+++ b/yarns/900-implements.yarn
@@ -83,3 +83,39 @@ The stdout, stderr, and exit code have been saved. Inspect them.
     IMPLEMENTS THEN output matches (.+)
     cat "$DATADIR/stdout"
     grep "$MATCH_1" "$DATADIR/stdout"
+
+## Manage a remote temporary directory
+
+Whenever we need to do anything that takes more than one step, we'll
+need a temporary directory in which to work. This is similar to the
+`DATADIR` that yarn provides us on the local machine.
+
+    IMPLEMENTS GIVEN a remote temporary directory to use
+    . "$DATADIR/config.sh"
+    name="$(ssh "$ACCOUNT@$SERVER" mktemp -d)"
+    echo "REMOTETMP=$name" >> "$DATADIR/config.sh"
+
+    IMPLEMENTS FINALLY remove remote temporary directory
+    # FIXME: The following will fail if REMOTETMP contains shell's
+    # magic characters or whitespace. Ugh.
+    . "$DATADIR/config.sh"
+    ssh "$ACCOUNT@$SERVER" rm -rf "$REMOTETMP"
+
+## Create remote directory
+
+    IMPLEMENTS GIVEN a directory (\S+) on the server
+    . "$DATADIR/config.sh"
+    run_remotely "$ACCOUNT@$SERVER" "$REMOTETMP" "mkdir $MATCH_1"
+
+## Check for files on the remote end
+
+    IMPLEMENTS THEN remote files (\S+) exist
+    . "$DATADIR/config.sh"
+    run_remotely "$ACCOUNT@$SERVER" "$REMOTETMP" "ls -d $MATCH_1" |
+        grep .
+
+## Run a command on the server
+
+    IMPLEMENTS WHEN server runs (.+)
+    . "$DATADIR/config.sh"
+    run_remotely "$ACCOUNT@$SERVER" "$REMOTETMP" "$MATCH_1"