diff --git a/content/posts/Editing-remote-files-with-emacs-comfortably.adoc b/content/posts/Editing-remote-files-with-emacs-comfortably.adoc
index 6c1564d..4c95a17 100644
--- a/content/posts/Editing-remote-files-with-emacs-comfortably.adoc
+++ b/content/posts/Editing-remote-files-with-emacs-comfortably.adoc
@@ -179,22 +179,22 @@ NOTE: I wrote the following code for Zsh, but it should also work for Bash.
 ----
 {{< highlight zsh >}}
 # Set preferred editor.
-if which emacsclient > /dev/null; then
-    VISUAL="$(which emacsclient) -f ~/.emacs.d/server/server -a emacs"
+if command -v emacsclient > /dev/null; then
+    VISUAL="$(command -v emacsclient) -f ~/.emacs.d/server/server -a emacs"
     if [[ -n "${SSH_CONNECTION}" ]]; then # Logged in via SSH.
-        if which emacsremote > /dev/null; then
-            VISUAL="$(which emacsremote)"
+        if command -v emacsremote > /dev/null; then
+            VISUAL="$(command -v emacsremote)"
         fi
-    elif [[ $(id -u) -eq 0 ]] && which emacsremote > /dev/null; then
+    elif [[ $(id -u) -eq 0 ]] && command -v emacsremote > /dev/null; then
         # Edit files as root in the Emacs instance run by the current user.
-        VISUAL="$(which emacsremote) --sudo --local"
+        VISUAL="$(command -v emacsremote) --sudo --local"
     fi
-elif which emacs > /dev/null; then
-    VISUAL="$(which emacs)"
-elif which vim > /dev/null; then
-    VISUAL="$(which vim)"
-elif which nano > /dev/null; then
-    VISUAL="$(which nano)"
+elif command -v emacs > /dev/null; then
+    VISUAL="$(command -v emacs)"
+elif command -v vim > /dev/null; then
+    VISUAL="$(command -v vim)"
+elif command -v nano > /dev/null; then
+    VISUAL="$(command -v nano)"
 fi
 export VISUAL
 export EDITOR="${VISUAL}"
@@ -208,9 +208,9 @@ if [[ "${VISUAL}" =~ "emacs(client|remote)" ]]; then
     if [[ "${VISUAL}" =~ "emacsremote$" ]]; then
         # Don't block the terminal until the file is closed.
         alias se="${VISUAL} -n --sudo"
-    elif which emacsremote >/dev/null &&  [[ -z "${SSH_CONNECTION}" ]]; then
+    elif command -v emacsremote >/dev/null &&  [[ -z "${SSH_CONNECTION}" ]]; then
         # Edit files as root in the Emacs instance run by the current user.
-        alias se="$(which emacsremote) -n --sudo --local"
+        alias se="$(command -v emacsremote) -n --sudo --local"
     fi
 else
     alias e="${VISUAL}"