zsh: add swapfile creation and deletion functions

.zshrc

@@ -119,6 +119,9 @@
       dc='docker-compose' \
       occ='docker exec -it -u www-data nextcloud php occ' \
 
+   # file copying with a progress bar
+   alias cpv="rsync -ah --info=progress2"
+
    # lists all open ports, along with some other info
    alias ls-ports='netstat -tulpn' 
    
@@ -375,6 +378,20 @@
       echo $(($*))
    }
 
+   # Makes a swapfile at /swapfile of a given size (ex: mkswp 4G)
+   mkswp() {
+      sudo fallocate -l "$1" /swapfile &&
+      sudo chmod 600 /swapfile
+      sudo mkswap /swapfile &&
+      sudo swapon /swapfile
+   }
+
+   # Deletes the swapfile created by mkswp()
+   rmswp() {
+      sudo swapoff -v /swapfile &&
+      sudo rm /swapfile
+   }
+
    # optionally source an external function file
    [ -f "${XDG_CONFIG_HOME:-$HOME/.config}/shell/fnrc" ] && source "${XDG_CONFIG_HOME:-$HOME/.config}/shell/fnrc"
 }