diff --git a/etc/profile.d/cli.sh b/etc/profile.d/cli.sh
index 971de08..bb1251f 100644
--- a/etc/profile.d/cli.sh
+++ b/etc/profile.d/cli.sh
@@ -14,6 +14,36 @@ if [ "$(whoami)" != "root" ]; then
         PS1='\[$(printf "\x0f")\033[01;34m\]$(_cwdSlashAtEnd)\[\033[00m\]$(__git_ps1 " (%s)") $ '
     fi
 
+    # Are you sures
+    function _ansi() {
+
+        # If command-line arguments
+        if [[ $# -ne 0 ]]; then
+            input="$*"
+
+        # If standard input
+        else
+            input=$(cat)
+        fi
+
+        # https://www.gnu.org/software/termutils/manual/termutils-2.0/html_chapter/tput_1.html#SEC8
+        echo "$input" | sed "s/\`\([^\`]*\)\`/$(tput smso)\1$(tput rmso)/g"
+    }
+    function _sure() {
+        if [[ $# -ne 1 ]]; then
+            return 1
+        fi
+        prompt=$(echo "$1" | _ansi)
+        while true; do
+            read -p "$prompt [y/N] " -r
+            if [[ "${REPLY,,}" =~ ^(y|yes)$ ]]; then
+                return 0
+            elif [[ "${REPLY,,}" =~ ^(n|no)$ ]]; then
+                return 1
+            fi
+        done
+    }
+
     # Aliases
     alias cd="HOME=\"$WORKDIR\" cd"
     alias cowsay="/usr/games/cowsay"
diff --git a/opt/cs50/bin/http-server b/opt/cs50/bin/http-server
index a0f1c26..28f8207 100755
--- a/opt/cs50/bin/http-server
+++ b/opt/cs50/bin/http-server
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/bash -l
 
 # Default options
 a="-a 0.0.0.0"
@@ -9,22 +9,16 @@ port="-p 8080"
 options="--no-dotfiles"
 t="-t0"
 
-# Formatting
-bold=$(tput bold)
-normal=$(tput sgr0)
-
 # Check for app.py or wsgi.py
 if [[ -f app.py ]] || [[ -f wsgi.py ]]; then
-    read -p "Are you sure you want to run ${bold}http-server${normal} and not ${bold}flask${normal}? [y/N] " -r
-    if [[ ! "${REPLY,,}" =~ ^y|yes$ ]]; then
+    if ! _sure "Are you sure you want to run \`http-server\` and not \`flask\`?"; then
         exit 1
     fi
 fi
 
 # Check for path
 if [[ $# -eq 1 ]] && [[ $1 != -* ]] && [[ ! $1 =~ ^\./?$ ]]; then
-    read -p "Are you sure you want to serve ${bold}${1}${normal} and not your current directory? [y/N] " -r
-    if [[ ! "${REPLY,,}" =~ ^y|yes$ ]]; then
+    if ! _sure "Are you sure you want to serve \`${1}\` and not your current directory?"; then
         exit 1
     fi
 fi
diff --git a/opt/cs50/bin/make b/opt/cs50/bin/make
index 4658e3e..d4275e8 100755
--- a/opt/cs50/bin/make
+++ b/opt/cs50/bin/make
@@ -1,23 +1,20 @@
 #!/bin/bash
 
-# Ensure no targets end with .c
-args=""
-invalid_args=0
-for arg; do
-    case "$arg" in
-        (*.c) arg=${arg%.c}; invalid_args=1;;
-    esac
-    args="$args $arg"
-done
-if [ $invalid_args -eq 1 ]; then
-    echo "Did you mean 'make$args'?"
-    exit 1
-fi
+# If a single target and not an option
+if [[ $# -eq 1 ]] && [[ "$1" != -* ]]; then
+
+    # If no Makefile
+    if [[ ! -f Makefile && ! -f makefile ]]; then
 
-# Run make
-if [[ -d "$1" ]]; then
-    echo "$1 is a directory"
-    exit 1
-else
-    /usr/bin/make -B -s $*
+        # If target ends with .c or is a directory
+        if [[ "$1" == *?.c || -d "$1" ]]; then
+
+            # Don't suppress "Nothing to be done" with --silent
+            /usr/bin/make "$1"
+            exit $?
+        fi
+    fi
 fi
+
+# Don't echo recipes
+/usr/bin/make --always-make --silent "$@"
diff --git a/opt/cs50/bin/sqlite3 b/opt/cs50/bin/sqlite3
index 3c1c0e7..fc2c61b 100755
--- a/opt/cs50/bin/sqlite3
+++ b/opt/cs50/bin/sqlite3
@@ -1,8 +1,4 @@
-#!/bin/bash
-
-# Formatting
-bold=$(tput bold)
-normal=$(tput sgr0)
+#!/bin/bash -l
 
 # If data is coming from stdin (pipe or redirection)
 if [[ -p /dev/stdin || ! -t 0 ]]; then
@@ -12,22 +8,19 @@ fi
 
 # If no command-line argument
 if [[ $# -eq 0 ]]; then
-    read -p "Are you sure you want to run ${bold}sqlite3${normal} without a command-line argument (e.g., the filename of a database)? [y/N] " -r
-    if [[ ! "${REPLY,,}" =~ ^y|yes$ ]]; then
+    if ! _sure "Are you sure you want to run \`sqlite3\` without a command-line argument (e.g., the filename of a database)?"; then
         exit 1
     fi
 
-# If one command-line argument
+# If one command-line argument and not an option
 elif [[ $# -eq 1 ]] && [[ ! "$1" =~ ^- ]]; then
     if [[ ! -f "$1" ]]; then
         if [[ ! "$1" =~ \.db$ ]]; then
-            read -p "Are you sure you want to create ${bold}$1${normal}? SQLite filenames usually end in ${bold}.db${normal}. [y/N] " -r
-            if [[ ! "${REPLY,,}" =~ ^y|yes$ ]]; then
+            if ! _sure "Are you sure you want to create \`$1\`? SQLite filenames usually end in \`.db\`."; then
                 exit 1
             fi
         else
-            read -p "Are you sure you want to create ${bold}$1${normal}? [y/N] " -r
-            if [[ ! "${REPLY,,}" =~ ^y|yes$ ]]; then
+            if ! _sure "Are you sure you want to create \`$1\`?"; then
                 exit 1
             fi
         fi
diff --git a/opt/cs50/bin/valgrind b/opt/cs50/bin/valgrind
index 60a6429..6e54252 100755
--- a/opt/cs50/bin/valgrind
+++ b/opt/cs50/bin/valgrind
@@ -1,13 +1,33 @@
-#!/bin/bash
+#!/bin/bash -l
 
-# Formatting
-bold=$(tput bold)
-normal=$(tput sgr0)
+# If one command-line argument and not an option
+if [[ $# -eq 1 ]] && [[ "$1" != -* ]]; then
 
-# If run on Python program
-if [[ "$1" == "python" || "$1" == *.py ]]; then
-    echo "Afraid ${bold}valgrind${normal} does not support Python programs!"
-    exit 1
+    # If run on Python program
+    if [[ "$1" =~ ^(python|python3)$ ]]; then
+        if ! _sure "Are you sure you want to run \`valgrind\` on \`$1\`? Valgrind does not support Python programs."; then
+            exit 1
+        fi
+    fi
+
+    # If not run on ./*
+    if [[ ! "$1" =~ ^./ ]]; then
+
+        # If $1 is in $PATH
+        if command -v "$1" &> /dev/null; then
+
+            # Discourage user from debugging $1
+            if [[ -f "$1" ]]; then
+                if ! _sure "Are you sure you want to run \`valgrind $1\` and not, e.g., \`valgrind ./$1\`?"; then
+                    exit 1
+                fi
+            else
+                if ! _sure "Are you sure you want to run \`valgrind\` on \`$1\`, which isn't in your current directory?"; then
+                    exit 1
+                fi
+            fi
+        fi
+    fi
 fi
 
 /usr/bin/valgrind "$@"