diff --git a/base/.config/bash/bashrc.d/aliases.sh b/base/.config/bash/bashrc.d/aliases.sh
index c9801b3..8b0a8ea 100644
--- a/base/.config/bash/bashrc.d/aliases.sh
+++ b/base/.config/bash/bashrc.d/aliases.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 alias ll='ls -alF'
 alias curl='curl --proto-default https --silent '
+alias to_lower="tr '[:upper:]' '[:lower:]'"
+alias to_upper="tr '[:lower:]' '[:upper:]'"
 
 alias 644='chmod 644'
 alias 755='chmod 755'