Add marked-dir tools

1 files changed, 24 insertions, 0 deletions

diff --git a/sh/shrc.d/xd.sh b/sh/shrc.d/xd.sh
new file mode 100644
index 00000000..01b8fd3a
--- /dev/null
+++ b/sh/shrc.d/xd.sh
@@ -0,0 +1,24 @@
+# Swap current directory with marked directory
+xd() {
+
+    # Refuse to deal with unwanted arguments
+    if [ "$#" -gt 0 ] ; then
+        printf >&2 'gd(): Unspecified argument\n'
+        return 2
+    fi
+
+    # Complain if mark not actually set yet
+    if ! [ -n "$PMD" ] ; then
+        printf >&2 'gd(): Mark not set\n'
+        return 2
+    fi
+
+    # Put the current and marked directories into positional params
+    set -- "$PMD" "$PWD"
+
+    # Try to change into the marked directory
+    cd -- "$1" || return
+    
+    # If that worked, we can swap the mark, and we're done
+    PMD=$2
+}