autoimprover: simplify linpeas checks (#769)

Co-authored-by: HackTricks PEASS Autoimprover <[email protected]>

linPEAS/builder/linpeas_parts/5_network_information/7_Tcpdump.sh

@@ -6,24 +6,13 @@
 # License: GNU GPL
 # Version: 1.0
 # Mitre: T1040
-# Functions Used: print_2title, print_3title, print_info, warn_exec
+# Functions Used: print_2title, print_3title, print_info, warn_exec, check_command
 # Global Variables: $EXTRA_CHECKS, $E, $SED_RED, $SED_GREEN, $SED_RED_YELLOW
 # Initial Functions:
-# Generated Global Variables: $tools_found, $tool, $interfaces, $interfaces_found, $iface, $cmd, $pattern, $patterns, $dumpcap_test_file
+# Generated Global Variables: $tools_found, $tool, $interfaces, $interfaces_found, $iface, $pattern, $patterns, $dumpcap_test_file
 # Fat linpeas: 0
 # Small linpeas: 1
 
-# Function to check if a command exists and is executable
-check_command() {
-    local cmd=$1
-    if command -v "$cmd" >/dev/null 2>&1; then
-        if [ -x "$(command -v "$cmd")" ]; then
-            return 0
-        fi
-    fi
-    return 1
-}
-
 # Function to check if we can sniff on an interface
 check_interface_sniffable() {
     local iface=$1

linPEAS/builder/linpeas_parts/5_network_information/8_Iptables.sh

@@ -6,24 +6,13 @@
 # License: GNU GPL
 # Version: 1.0
 # Mitre: T1016
-# Functions Used: print_2title, print_3title, warn_exec, echo_not_found
+# Functions Used: print_2title, print_3title, warn_exec, echo_not_found, check_command
 # Global Variables: $EXTRA_CHECKS, $E, $SED_RED, $SED_GREEN, $SED_YELLOW, $SED_RED_YELLOW
 # Initial Functions:
-# Generated Global Variables: $rules_file, $cmd, $tool, $config_file, $sysctl_var
+# Generated Global Variables: $rules_file, $tool, $config_file, $sysctl_var
 # Fat linpeas: 0
 # Small linpeas: 1
 
-# Function to check if a command exists and is executable
-check_command() {
-    local cmd=$1
-    if command -v "$cmd" >/dev/null 2>&1; then
-        if [ -x "$(command -v "$cmd")" ]; then
-            return 0
-        fi
-    fi
-    return 1
-}
-
 # Function to analyze iptables rules
 analyze_iptables() {
     echo ""

linPEAS/builder/linpeas_parts/5_network_information/9_Inetdconf.sh

@@ -6,24 +6,13 @@
 # License: GNU GPL
 # Version: 1.0
 # Mitre: T1049
-# Functions Used: print_2title, print_3title, warn_exec, echo_not_found, lp_trusted_version_path
+# Functions Used: print_2title, print_3title, warn_exec, echo_not_found, lp_trusted_version_path, check_command
 # Global Variables: $EXTRA_CHECKS, $E, $SED_RED, $SED_GREEN, $SED_YELLOW
 # Initial Functions:
-# Generated Global Variables: $inetd_service, $log_file, $cmd, $service_name, $conf_file, $service_dir, $service_file, $file, $inetd_command, $inetd_telnet_probe_count, $service, $socket, $protocol, $user, $server, $checked_binary, $trusted_server, $version_output, $version, $major, $minor, $patch, $rest
+# Generated Global Variables: $inetd_service, $log_file, $service_name, $conf_file, $service_dir, $service_file, $file, $inetd_command, $inetd_telnet_probe_count, $service, $socket, $protocol, $user, $server, $checked_binary, $trusted_server, $version_output, $version, $major, $minor, $patch, $rest
 # Fat linpeas: 0
 # Small linpeas: 0
 
-# Function to check if a command exists and is executable
-check_command() {
-    local cmd=$1
-    if command -v "$cmd" >/dev/null 2>&1; then
-        if [ -x "$(command -v "$cmd")" ]; then
-            return 0
-        fi
-    fi
-    return 1
-}
-
 inetd_telnet_upstream_affected() {
     local major=$1 minor=$2 patch=$3
     if [ "$major" -eq 1 ]; then

linPEAS/builder/linpeas_parts/functions/check_command.sh

@@ -0,0 +1,23 @@
+# Title: Function - check_command
+# ID: check_command
+# Author: PEASS-ng contributors
+# Last Update: 10-10-2026
+# Description: Check whether a command resolves to an executable file.
+# License: GNU GPL
+# Version: 1.0
+# Functions Used:
+# Global Variables:
+# Initial Functions:
+# Generated Global Variables: $cmd
+# Fat linpeas: 0
+# Small linpeas: 1
+
+check_command() {
+    local cmd=$1
+    if command -v "$cmd" >/dev/null 2>&1; then
+        if [ -x "$(command -v "$cmd")" ]; then
+            return 0
+        fi
+    fi
+    return 1
+}