diff --git a/zsh/.zshrc b/zsh/.zshrc
index 59dc6d8..c4a1f5c 100755
--- a/zsh/.zshrc
+++ b/zsh/.zshrc
@@ -198,32 +198,46 @@ function extract()
 }
 
 forget () {
-    print "Forgetting last line with '$@'. Please reload shell after completion."
+    if [ -z "$@" ]; then
+        echo "ERROR: No keyword given"
+        return
+    fi
 
-    temp=$(mktemp)
+    echo "Forgetting last command with '$@'."
 
-    sed -e '$ d' ~/.zsh_history | tac | awk "!/$@/ || f++" | tac > $temp
+    new_zsh_history=$(tac ~/.zsh_history | awk "/$@/ && p<2 {p++; next}1" | tac)
     print "Difference between .zsh_history and new .zsh_history"
-    diff ~/.zsh_history $temp
+    echo $new_zsh_history | diff ~/.zsh_history -
 
-    mv $temp ~/.zsh_history
-
-    if [ -f $temp ]; then
-        rm -f $temp
+    read answer
+    if [ "$answer" = "y" ]; then
+        echo $new_zsh_history > ~/.zsh_history
+        echo "Last line with '$@' forgotten"
+        echo "You will need to reload your shell for the changes to take effect."
+    else
+        echo "Changes not applied."
     fi
 }
 
 forgetall () {
-    print "Forgetting all lines with '$@'. Please reload shell after completion."
+    if [ -z "$@" ]; then
+        echo "ERROR: No keyword given"
+        return
+    fi
 
-    temp=$(mktemp)
-    sed "/$@/d" ~/.zsh_history > $temp
+    echo "Forgetting all command with '$@'."
+
+    new_zsh_history=$(grep --inverse-match "$@" ~/.zsh_history)
     print "Difference between .zsh_history and new .zsh_history"
-    diff ~/.zsh_history $temp
-    mv $temp ~/.zsh_history
+    echo $new_zsh_history | diff ~/.zsh_history -
 
-    if [ -f $temp ]; then
-        rm -f $temp
+    read -p 'Apply changes? (y/n): ' answer
+    if [ "$answer" = "y" ]; then
+        echo $new_zsh_history > ~/.zsh_history
+        echo "Last line with '$@' forgotten"
+        echo "You will need to reload your shell for the changes to take effect."
+    else
+        echo "Changes not applied."
     fi
 }
 
@@ -237,17 +251,3 @@ fcd() {
     fi
 }
 
-tcd() {
-    DIR=$(mktemp -d 2>/dev/null)
-    if [[ -e "$DIR" ]]; then
-        cd $DIR
-        print "Moved to \"$DIR\""
-    else
-        print "\"$DIR\" failed to be created"
-    fi
-}
-
-ttcd() {
-    cd /tmp
-    tcd
-}