diff --git a/commands b/commands
new file mode 100644
index 0000000..28e65e4
--- /dev/null
+++ b/commands
@@ -0,0 +1,39 @@
+Optimus Manager https://github.com/Askannz/optimus-manager/blob/master/README.md
+  optimus-manager --switch nvidia
+  optimus-manager --switch integrated
+  optimus-manager --switch hybrid
+
+Redshift
+  redshift -O 3000
+
+tar
+  cd /
+sudo tar -cvpz \
+--exclude=/backup_nofiles.tar.gz \
+--exclude=/proc \
+--exclude=/tmp \
+--exclude=/mnt \
+--exclude=/dev \
+--exclude=/sys \
+--exclude=/run \
+--exclude=/media \
+--exclude=/var/log \
+--exclude=/var/cache/apt/archives \
+--exclude=/home/*/.gvfs \
+--exclude=/home/*/.cache \
+--exclude=/home/*/Documents \
+--exclude=/home/*/Downloads \
+--exclude=/home/*/Code \
+--exclude=/home/*/Pictures \
+--exclude=/home/*/Videos \
+--exclude=/home/*/SoftMaker\
+--exclude=/home/*/Desktop \
+--exclude=/home/*/Music \
+--exclude=/home/*/Templates \
+--exclude=/home/*/.local/share/Trash \
+--exclude=/home/*/.local/share/Steam \
+--file backup.tar.gz /
+mv backup_nofiles $(echo $(date +'%Y-%m%d')-backup_nofiles.tar.gz)
+
+extract ipv6 for duckdns
+ip -6 addr show scope global | grep -o -P '(?<=inet6 ).*(?=/)'