Diff

Use Linux diff command to compare files line by line. This handy tool helps you identify line differences between files and console output. Command diff -y file1 file1 Marker Meaning | = line present in both files but the text differs. < = line present only in the left file. > = line present only in the right file. Examples Comparing two package.json files johnpili@com ~ % diff -y package1.json package2.json { { "name": "date-diff", | "name": "time-zones", "version": "0.0.0", "version": "0.0.0", "scripts": { "scripts": { "ng": "ng", "ng": "ng", "start": "ng serve", "start": "ng serve", "build": "ng build --base-href /tools/date-diff/ --config | "build": "ng build", "watch": "ng build --watch --configuration development", "watch": "ng build --watch --configuration development", "test": "ng test" "test": "ng test" }, }, "private": true, "private": true, "dependencies": { "dependencies": { "@angular/common": "^19.2.0", "@angular/common": "^19.2.0", "@angular/compiler": "^19.2.0", "@angular/compiler": "^19.2.0", "@angular/core": "^19.2.0", "@angular/core": "^19.2.0", "@angular/forms": "^19.2.0", "@angular/forms": "^19.2.0", "@angular/platform-browser": "^19.2.0", "@angular/platform-browser": "^19.2.0", "@angular/platform-browser-dynamic": "^19.2.0", "@angular/platform-browser-dynamic": "^19.2.0", "@angular/router": "^19.2.0", "@angular/router": "^19.2.0", "@tailwindcss/postcss": "^4.1.4", "@tailwindcss/postcss": "^4.1.4", "daisyui": "^5.0.28", "daisyui": "^5.0.28", "moment": "^2.30.1", | "moment-timezone": "^0.5.48", "postcss": "^8.5.3", "postcss": "^8.5.3", "rxjs": "~7.8.0", "rxjs": "~7.8.0", "tailwindcss": "^4.1.4", "tailwindcss": "^4.1.4", "tslib": "^2.3.0", "tslib": "^2.3.0", "zone.js": "~0.15.0" "zone.js": "~0.15.0" }, }, "devDependencies": { "devDependencies": { "@angular-devkit/build-angular": "^19.2.8", "@angular-devkit/build-angular": "^19.2.8", "@angular/cli": "^19.2.8", "@angular/cli": "^19.2.8", "@angular/compiler-cli": "^19.2.0", "@angular/compiler-cli": "^19.2.0", "@types/jasmine": "~5.1.0", "@types/jasmine": "~5.1.0", "jasmine-core": "~5.6.0", "jasmine-core": "~5.6.0", "karma": "~6.4.0", "karma": "~6.4.0", "karma-chrome-launcher": "~3.2.0", "karma-chrome-launcher": "~3.2.0", "karma-coverage": "~2.2.0", "karma-coverage": "~2.2.0", "karma-jasmine": "~5.1.0", "karma-jasmine": "~5.1.0", "karma-jasmine-html-reporter": "~2.1.0", "karma-jasmine-html-reporter": "~2.1.0", "typescript": "~5.7.2" "typescript": "~5.7.2" } } } } johnpili@com ~ % The example below shows how to use diff to compare installed PHP modules. This is very useful when you’re switching to a different version of PHP ...