Try this

src/tools/terminal.rs

@@ -1,11 +1,9 @@
 use crate::tools::format_path;
-use std::{process::Command, env, path::Path};
-use std::io::BufReader;
 use std::io::BufRead;
+use std::io::BufReader;
+use std::io::Read;
 use std::process::Stdio;
-use nix::fcntl::{fcntl, FcntlArg, OFlag};
+use std::{env, path::Path, process::Command};
-use std::os::unix::io::AsRawFd;
-
 
 pub struct CommandEntry {
     pub env: String,
@@ -16,7 +14,6 @@ pub struct CommandEntry {
     pub error_buffer: BufReader<std::process::ChildStderr>,
 }
 
-
 impl CommandEntry {
     pub fn new(command: String) -> Self {
         let (stdout_reader, stderr_reader) = execute(command.clone());
@@ -32,34 +29,35 @@ impl CommandEntry {
     }
 
     pub fn update(&mut self) {
-		let mut output = String::new();
+        for line in self.output_buffer.by_ref().lines() {
-		let _ = self.output_buffer.read_line(&mut output);
+            match line {
-		if !output.is_empty() {
+                Ok(line) => self.output += &format!("{}\n", line),
-			self.output += &output;
+                Err(_) => return,
+            }
         }
 
-		let mut error = String::new();
+        for line in self.error_buffer.by_ref().lines() {
-		let _ = self.error_buffer.read_line(&mut error);
+            match line {
-		if !error.is_empty() {
+                Ok(line) => self.error += &format!("{}\n", line),
-			self.error += &error;
+                Err(_) => return,
+            }
         }
     }
 }
 
-
 pub fn send_command(command: String) -> CommandEntry {
     if command.len() < 2 {
         return CommandEntry::new(command);
     }
 
     if &command[..2] != "cd" {
-		return CommandEntry::new(command)
+        return CommandEntry::new(command);
     }
 
     if command.len() < 4 {
         let mut entry = CommandEntry::new("echo Invalid cd, should provide path >&2".to_string());
         entry.command = command;
-		return entry
+        return entry;
     }
 
     let path_append = command[3..].replace("~", "/home/penwing");
@@ -68,22 +66,27 @@ pub fn send_command(command: String) -> CommandEntry {
     if format!("{}", path.display()) == "/" {
         let mut entry = CommandEntry::new("echo Root access denied >&2".to_string());
         entry.command = command;
-		return entry
+        return entry;
     }
 
     if env::set_current_dir(path).is_ok() {
         let mut entry = CommandEntry::new(format!("echo Moved to : {}", path.display()));
         entry.command = command;
-		return entry
+        return entry;
     } else {
-		let mut entry = CommandEntry::new(format!("echo Could not find path : {} >&2", path.display()));
+        let mut entry =
+            CommandEntry::new(format!("echo Could not find path : {} >&2", path.display()));
         entry.command = command;
-		return entry
+        return entry;
     }
 }
 
-
+pub fn execute(
-pub fn execute(command: String) -> (BufReader<std::process::ChildStdout>, BufReader<std::process::ChildStderr>) {
+    command: String,
+) -> (
+    BufReader<std::process::ChildStdout>,
+    BufReader<std::process::ChildStderr>,
+) {
     let mut child = Command::new("sh")
         .arg("-c")
         .arg(command.clone())
@@ -93,14 +96,7 @@ pub fn execute(command: String) -> (BufReader<std::process::ChildStdout>, BufRea
         .expect("failed to execute process");
 
     let stdout = child.stdout.take().unwrap();
-	let stdout_fd = stdout.as_raw_fd();
-
-	fcntl(stdout_fd, FcntlArg::F_SETFL(OFlag::O_NONBLOCK)).expect("Failed to set non-blocking mode");
-	
     let stderr = child.stderr.take().unwrap();
-	let stderr_fd = stderr.as_raw_fd();
-
-	fcntl(stderr_fd, FcntlArg::F_SETFL(OFlag::O_NONBLOCK)).expect("Failed to set non-blocking mode");
 
     return (BufReader::new(stdout), BufReader::new(stderr));
 }