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+====== .bashrc up ======
+To cd up a certain number of times, add this to your .bashrc file
+<code bash>
+up() {
+        local d=""
+        local limit="$1"
+        if [ -z "$limit" ] || [ "$limit" -le 0 ]; then
+                limit=1
+        fi
+        for ((i=1;i<=limit;i++)); do
+                d="../$d"
+        done
+        if ! cd "$d"; then
+                echo "Path shallower than $limit";
+        fi
+}
+</code>