diff --git a/README.md b/README.md
index b2adfb1..d1f5f49 100644
--- a/README.md
+++ b/README.md
@@ -15,21 +15,24 @@ Explore a dump (require `jq`):
 Explore specific entries of a dump:
 > ./sysdump.sh dump.json uname timezone
 
+# Useful entries
+Important note: Depending on the system, some entries may not be available.
+
+| Entry                 | Description                                                      |
+|-----------------------|------------------------------------------------------------------|
+| compgen               | List all available commands in current shell                     |
+| ping                  | Check if ping succeed (internet is available)                    |
+| boot_folder           | Recursive listing of /boot/                                      |
+| root_folder           | Content of /                                                     |
+| home_folder           | Content of $HOME                                                 |
+| cmd_<command>_version | Get the version of some specific commands (e.g: gcc, python etc) |
+
 # Notes
 - To get available entries see into `sysdump.sh`
 - Some commands require root permissions.
 If `sysdump.sh` is not run as root, these commands will not be executed.
-
-# Useful entries
-Important note: Depending on the system, some entries may not be available.
-
-| Entry       | Description                                  |
-|-------------|----------------------------------------------|
-| compgen     | List all available commands in current shell |
-| boot_folder | Recursive listing of /boot/                  |
-| root_folder | Content of /                                 |
-| home_folder | Content of $HOME                             |
-
-
-
+- List available entries:
+> cat dump.json |grep -o ".*:"
+- List available command versions:
+> cat dump.json |grep -o "cmd_.*_version"
 
diff --git a/sysdump.sh b/sysdump.sh
index f9762ea..4237bc5 100755
--- a/sysdump.sh
+++ b/sysdump.sh
@@ -111,6 +111,14 @@ dump "lsfd" safecmd lsfd
 dump "root_folder" safecmd ls -al /
 dump "glxinfo" safecmd glxinfo -B
 dump "compgen" safecmd compgen -c
+dump "openssl" safecmd openssl
+dump "ping" safecmd ping -c 2 -W 2 4.2.2.2
+for cmd in bash gcc ld python3 cmake make tar zip gzip bzip2 xz cpio wget rsync curl node pip apt cat systemctl gpg R ruby awk grep sshfs
+do
+	dump "cmd_${cmd}_version" safecmd $cmd --version
+done
+dump "cmd_ssh_version" safecmd sshd -V
+dump "cmd_tmux_version" safecmd tmux -V
 # safecmdroot
 dump "dmidecode" safecmdroot dmidecode
 dump "iptables" safecmdroot iptables -L