diff --git a/implement-shell-tools/cat/cat*.js b/implement-shell-tools/cat/cat*.js
new file mode 100644
index 000000000..ab543e2ff
--- /dev/null
+++ b/implement-shell-tools/cat/cat*.js
@@ -0,0 +1,6 @@
+const fs = require("fs");
+const folderPath = "./sample-files";
+const content = fs.readdirSync(folderPath);
+
+const txtFiles = content.filter((file) => file.endsWith(".txt"));
+process.stdout.write(txtFiles.join("\n"));
diff --git a/implement-shell-tools/cat/cat-b.js b/implement-shell-tools/cat/cat-b.js
new file mode 100644
index 000000000..690914cad
--- /dev/null
+++ b/implement-shell-tools/cat/cat-b.js
@@ -0,0 +1,12 @@
+const fs = require("fs");
+const filePath = "./sample-files/3.txt";
+const content = fs.readFileSync(filePath, "utf-8");
+
+let count = 1;
+const numberLines = content.split("\n").map((line) => {
+  if (line.trim() !== "") {
+    return `${count++} ${line.trim()}`;
+  }
+  return "";
+});
+process.stdout.write(numberLines.join("\n"));
diff --git a/implement-shell-tools/cat/cat-n*txt.js b/implement-shell-tools/cat/cat-n*txt.js
new file mode 100644
index 000000000..1602ce95f
--- /dev/null
+++ b/implement-shell-tools/cat/cat-n*txt.js
@@ -0,0 +1,9 @@
+const fs = require("fs");
+const folderPath = "./sample-files";
+const content = fs.readdirSync(folderPath);
+
+const txtFiles = content.filter((file) => file.endsWith(".txt"));
+const numberedLine = txtFiles.map((line, index) => {
+  return `${index + 1} ${line}`;
+});
+process.stdout.write(numberedLine.join("\n"));
diff --git a/implement-shell-tools/cat/cat-n.js b/implement-shell-tools/cat/cat-n.js
new file mode 100644
index 000000000..e6ba5a309
--- /dev/null
+++ b/implement-shell-tools/cat/cat-n.js
@@ -0,0 +1,8 @@
+const fs = require("fs");
+const filePath = "./sample-files/1.txt";
+const content = fs.readFileSync(filePath, "utf-8");
+
+const lineNumber = content.split("\n").map((line, index) => {
+  return `${index + 1} ${line}`;
+});
+process.stdout.write(lineNumber.join("\n"));
diff --git a/implement-shell-tools/cat/cat.js b/implement-shell-tools/cat/cat.js
new file mode 100644
index 000000000..d62d766a4
--- /dev/null
+++ b/implement-shell-tools/cat/cat.js
@@ -0,0 +1,6 @@
+const fs = require("fs");
+const filePath = "./sample-files/1.txt";
+
+const content = fs.readFileSync(filePath, "utf-8");
+
+process.stdout.write(content);
\ No newline at end of file
diff --git a/implement-shell-tools/ls/ls-1-a.js b/implement-shell-tools/ls/ls-1-a.js
new file mode 100644
index 000000000..e9d91bc7e
--- /dev/null
+++ b/implement-shell-tools/ls/ls-1-a.js
@@ -0,0 +1,8 @@
+const fs = require("fs");
+const path = "./sample-files";
+const content = fs.readdirSync(path);
+console.log(".");
+console.log("..");
+
+const files = content.map((item) => item);
+console.log(files.join("\n"));
diff --git a/implement-shell-tools/ls/ls-1-sample-files.js b/implement-shell-tools/ls/ls-1-sample-files.js
new file mode 100644
index 000000000..c50bb052e
--- /dev/null
+++ b/implement-shell-tools/ls/ls-1-sample-files.js
@@ -0,0 +1,5 @@
+const fs = require("fs");
+const path = "./sample-files";
+const contents = fs.readdirSync(path).filter((file) => !file.startsWith("."));
+
+console.log(contents.join("\n"));
diff --git a/implement-shell-tools/ls/ls-1.js b/implement-shell-tools/ls/ls-1.js
new file mode 100644
index 000000000..7ee332ad6
--- /dev/null
+++ b/implement-shell-tools/ls/ls-1.js
@@ -0,0 +1,4 @@
+const fs = require("fs");
+const path = "../ls";
+const files = fs.readdirSync(path);
+console.log(files.join("\n"));
diff --git a/implement-shell-tools/ls/ls-sample-1txt.js b/implement-shell-tools/ls/ls-sample-1txt.js
new file mode 100644
index 000000000..ec9387f7c
--- /dev/null
+++ b/implement-shell-tools/ls/ls-sample-1txt.js
@@ -0,0 +1,4 @@
+const fs = require("fs");
+const path = "./sample-files/1.txt";
+
+console.log(path);
diff --git a/implement-shell-tools/ls/ls-sample-files*.js b/implement-shell-tools/ls/ls-sample-files*.js
new file mode 100644
index 000000000..1d7113895
--- /dev/null
+++ b/implement-shell-tools/ls/ls-sample-files*.js
@@ -0,0 +1,12 @@
+const fs = require("fs");
+const path = "./sample-files";
+const directories = fs.readdirSync(path);
+
+directories.forEach((file) => {
+  if (file === "dir") {
+    console.log("dir:");
+    console.log(fs.readdirSync("./sample-files/dir").join(" "));
+  } else {
+    console.log(file);
+  }
+});
diff --git a/implement-shell-tools/ls/ls-sample-files.js b/implement-shell-tools/ls/ls-sample-files.js
new file mode 100644
index 000000000..3b087d116
--- /dev/null
+++ b/implement-shell-tools/ls/ls-sample-files.js
@@ -0,0 +1,5 @@
+const fs = require("fs");
+const folderPath = "./sample-files";
+const contents = fs.readdirSync(folderPath);
+
+console.log(contents.join(" "));
diff --git a/implement-shell-tools/wc/wc-3txt.js b/implement-shell-tools/wc/wc-3txt.js
new file mode 100644
index 000000000..a89bf8649
--- /dev/null
+++ b/implement-shell-tools/wc/wc-3txt.js
@@ -0,0 +1,9 @@
+const fs = require("fs");
+const file = "./sample-files/3.txt";
+const content = fs.readFileSync(file, "utf-8");
+
+let lines = 0;
+
+const line = content.split("\n").length - 1;
+lines += line;
+console.log(lines, file);
diff --git a/implement-shell-tools/wc/wc-character-count.js b/implement-shell-tools/wc/wc-character-count.js
new file mode 100644
index 000000000..e10289bef
--- /dev/null
+++ b/implement-shell-tools/wc/wc-character-count.js
@@ -0,0 +1,9 @@
+const fs = require("fs");
+const file = "./sample-files/3.txt";
+const content = fs.readFileSync(file, "utf-8");
+
+let characters = 0;
+
+const char = content.length;
+characters += char;
+console.log(characters, file);
diff --git a/implement-shell-tools/wc/wc-count-lines-words-total.js b/implement-shell-tools/wc/wc-count-lines-words-total.js
new file mode 100644
index 000000000..8ecd4fb32
--- /dev/null
+++ b/implement-shell-tools/wc/wc-count-lines-words-total.js
@@ -0,0 +1,19 @@
+const fs = require("fs");
+const folder = "./sample-files";
+const content = fs.readdirSync(folder);
+
+let totalLines = 0;
+let totalWords = 0;
+content.forEach((file) => {
+  const path = `${folder}/${file}`;
+  const filePath = fs.readFileSync(path, "utf-8");
+
+  const line = filePath.split("\n").length - 1;
+  const word = filePath.split(/\s+/).length - 1;
+
+  totalLines += line;
+  totalWords += word;
+  console.log(line, word, path);
+});
+
+console.log(totalLines, totalWords, "total");
diff --git a/implement-shell-tools/wc/wc-count-lines-words.js b/implement-shell-tools/wc/wc-count-lines-words.js
new file mode 100644
index 000000000..a4a5e8d7d
--- /dev/null
+++ b/implement-shell-tools/wc/wc-count-lines-words.js
@@ -0,0 +1,8 @@
+const fs = require("fs");
+const file = "./sample-files/3.txt";
+const content = fs.readFileSync(file, "utf-8");
+
+const line = content.split("\n").length - 1;
+const word = content.split(/\s+/).length - 1;
+
+console.log(line, word, file);
diff --git a/implement-shell-tools/wc/wc-lines-files.js b/implement-shell-tools/wc/wc-lines-files.js
new file mode 100644
index 000000000..a4067b08d
--- /dev/null
+++ b/implement-shell-tools/wc/wc-lines-files.js
@@ -0,0 +1,16 @@
+const fs = require("fs");
+const folder = "./sample-files";
+const filesPath = fs.readdirSync(folder);
+
+let totalLines = 0;
+
+filesPath.forEach((file) => {
+  const path = `${folder}/${file}`;
+  const files = fs.readFileSync(path, "utf-8");
+
+  const lines = files.split("\n").length - 1;
+  console.log(lines, path);
+
+  totalLines += lines;
+});
+console.log(totalLines, "total");
diff --git a/implement-shell-tools/wc/wc-word-count.js b/implement-shell-tools/wc/wc-word-count.js
new file mode 100644
index 000000000..ea619eaa8
--- /dev/null
+++ b/implement-shell-tools/wc/wc-word-count.js
@@ -0,0 +1,7 @@
+const fs = require("fs");
+const file = "./sample-files/3.txt";
+const content = fs.readFileSync(file, "utf-8");
+
+const word = content.split(/\s+/).length - 1;
+
+console.log(word, file);
diff --git a/implement-shell-tools/wc/wc.js b/implement-shell-tools/wc/wc.js
new file mode 100644
index 000000000..0c116983a
--- /dev/null
+++ b/implement-shell-tools/wc/wc.js
@@ -0,0 +1,28 @@
+// Power shell commands =======> Vs <===== Js codes
+
+// wc sample-files/* 
+
+const fs = require("fs");
+const filePath = "./sample-files";
+const contents = fs.readdirSync(filePath);
+
+let totalLines = 0;
+let totalWords = 0;
+let totalCharacters = 0;
+
+contents.forEach((file) => {
+  const path = `${filePath}/${file}`;
+
+  const files = fs.readFileSync(path, "utf-8");
+
+  const lines = files.split("\n").length - 1;
+  const words = files.trim().split(/\s+/).length;
+  const chars = files.length;
+
+  console.log(lines, words, chars, path);
+
+  totalLines += lines;
+  totalWords += words;
+  totalCharacters += chars;
+});
+console.log(totalLines, totalWords, totalCharacters, "total");