Add ungrep and helpdef

fake_home/.shell_aliases

@@ -9,6 +9,15 @@ else
 fi
 
 alias _slides="$(which slides 2> /dev/null || echo "echo 'slides not installed'")"
+
+function helpdef {
+    if [[ "$1" == "--help" ]] || [[ "$1" == "-h" ]]; then
+        echo "$2"
+        return 0
+    fi
+    return 1
+}
+
 function slides() {
     OLD_PATH="$PATH"
     PATH="$HOME/.slides-bin:$PATH"
@@ -64,6 +73,15 @@ function hearch {
     history 0 | sed 's/[0-9 ]*//' | grep "$@"
 }
 
+function ungrep {
+    helpdef "$1" "grep -v's all arguments from the piped input" && return 0
+    local output="$(cat)"
+    for arg in "$@"; do
+        output="$(echo "$output" | grep -v "$arg")"
+    done
+    echo "$output"
+}
+
 function kubelog {
     local pods="$(kubectl get pods | grep "$1")"
     local selection="1"