compare two directories linux code example

Example 1: directory diff

diff -qr dir1/ dir2/

Example 2: how to compare two directories in linux

# -q switch tells diff to report only when files differ
$ diff -q directory-1/ directory-2/

Example 3: ubuntu diff directories

$ sudo apt install meld  [Debian/Ubuntu systems]
$ sudo yum install meld  [RHEL/CentOS systems]
$ sudo dnf install meld  [Fedora 22+]