Add --execute option (#6302)

crates/nu-cli/src/repl.rs

@@ -16,7 +16,7 @@ use nu_protocol::{
     ast::PathMember,
     engine::{EngineState, Stack, StateWorkingSet},
     format_duration, BlockId, HistoryFileFormat, PipelineData, PositionalArg, ShellError, Span,
-    Type, Value, VarId,
+    Spanned, Type, Value, VarId,
 };
 use reedline::{DefaultHinter, Emacs, SqliteBackedHistory, Vi};
 use std::io::{self, Write};
@@ -39,6 +39,7 @@ pub fn evaluate_repl(
     stack: &mut Stack,
     nushell_path: &str,
     is_perf_true: bool,
+    prerun_command: Option<Spanned<String>>,
 ) -> Result<()> {
     use reedline::{FileBackedHistory, Reedline, Signal};
 
@@ -140,6 +141,17 @@ pub fn evaluate_repl(
         }
     }
 
+    if let Some(s) = prerun_command {
+        eval_source(
+            engine_state,
+            stack,
+            s.item.as_bytes(),
+            &format!("entry #{}", entry_num),
+            PipelineData::new(Span::new(0, 0)),
+        );
+        engine_state.merge_env(stack, get_guaranteed_cwd(engine_state, stack))?;
+    }
+
     loop {
         if is_perf_true {
             info!(