Script bash: Info del sistema con menú

Script bash: Info del sistema con menú.

Anteriormente ya creamos un script que nos aportaba información simple con menú de nuestro sistema, el que vemos hoy es mucho mas completo y nos ofrecerá la siguiente información:

Fecha y horario de uso.
Información del sistema operativo.
Detalles del hostname y las dns.
Información de la red o redes.
Quien esta conectado.
Registro de ultimas visitas.
Información detallada de la memoria libre y usada (ram y swap)

Ejemplo del menú…

Script bash «Info del sistema con menú»

Creamos el script.

nano infosistema.sh

1	nano infosistema.sh

Copia y pega lo siguiente…

#!/bin/bash
# infosistema.sh - Menu driven shell script to get information 
# Linux server-desktop.

# Define variables
LSB=/usr/bin/lsb_release

# Purpose: Display pause prompt
# $1-> Message (optional)
function pause(){
	local message="$@"
	[ -z $message ] && message="Press [Enter] key to continue..."
	read -p "$message" readEnterKey
}

# Purpose  - Display a menu on screen
function show_menu(){
    date
    echo "---------------------------"
    echo "   Main Menu"
    echo "---------------------------"
	echo "1. Info del sistema operativo"
	echo "2. Info del hostname y dns"
	echo "3. Info de la red"
	echo "4. Quien esta conectado"
	echo "5. Registro de ultimas visitas"
	echo "6. Info de la memoria libre y usada"
	echo "7. Salir"
}

# Purpose - Display header message
# $1 - message
function write_header(){
	local h="$@"
	echo 
"---------------------------------------------------------------"
	echo "     ${h}"
	echo 
"---------------------------------------------------------------"
}

# Purpose - Get info about your operating system
function os_info(){
	write_header " System information "
	echo "Operating system : $(uname)"
	[ -x $LSB ] && $LSB -a || echo "$LSB command is not insalled 
(set \$LSB variable)"
	#pause "Press [Enter] key to continue..."
	pause
}

# Purpose - Get info about host such as dns, IP, and hostname
function host_info(){
	local dnsips=$(sed -e '/^$/d' /etc/resolv.conf | awk '{if 
(tolower($1)=="nameserver") print $2}')
	write_header " Hostname and DNS information "
	echo "Hostname : $(hostname -s)"
	echo "DNS domain : $(hostname -d)"
	echo "Fully qualified domain name : $(hostname -f)"
	echo "Network address (IP) :  $(hostname -i)"
	echo "DNS name servers (DNS IP) : ${dnsips}"
	pause
}

# Purpose - Network inferface and routing info
function net_info(){
	devices=$(netstat -i | cut -d" " -f1 | egrep -v 
"^Kernel|Iface|lo")
	write_header " Network information "
	echo "Total network interfaces found : $(wc -w <<<${devices})"

	echo "*** IP Addresses Information ***"
	ip -4 address show

	echo "***********************"
	echo "*** Network routing ***"
	echo "***********************"
	netstat -nr

	echo "**************************************"
	echo "*** Interface traffic information ***"
	echo "**************************************"
	netstat -i

	pause 
}

# Purpose - Display a list of users currently logged on 
#           display a list of receltly loggged in users   
function user_info(){
	local cmd="$1"
	case "$cmd" in 
		who) write_header " Who is online "; who -H; pause ;;
		last) write_header " List of last logged in users "; 
last ; pause ;;
	esac 
}

# Purpose - Display used and free memory info
function mem_info(){
	write_header " Free and used memory "
	free -m
    
    echo "*********************************"
	echo "*** Virtual memory statistics ***"
    echo "*********************************"
	vmstat
    echo "***********************************"
	echo "*** Top 5 memory eating process ***"
    echo "***********************************"	
	ps auxf | sort -nr -k 4 | head -5	
	pause
}
# Purpose - Get input via the keyboard and make a decision using 
case..esac 
function read_input(){
	local c
	read -p "Enter your choice [ 1 - 7 ] " c
	case $c in
		1)	os_info ;;
		2)	host_info ;;
		3)	net_info ;;
		4)	user_info "who" ;;
		5)	user_info "last" ;;
		6)	mem_info ;;
		7)	echo "Bye!"; exit 0 ;;
		*)	
			echo "Please select between 1 to 7 choice only."
			pause
	esac
}

# ignore CTRL+C, CTRL+Z and quit singles using the trap
trap '' SIGINT SIGQUIT SIGTSTP

# main logic
while true
do
	clear
 	show_menu	# display memu
 	read_input  # wait for user input
done

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

#!/bin/bash

# infosistema.sh - Menu driven shell script to get information

# Linux server-desktop.

# Define variables

LSB=/usr/bin/lsb_release

# Purpose: Display pause prompt

# $1-> Message (optional)

function pause(){

local message="$@"

[ -z $message ] && message="Press [Enter] key to continue..."

read -p "$message" readEnterKey

}

# Purpose - Display a menu on screen

function show_menu(){

date

echo "---------------------------"

echo " Main Menu"

echo "---------------------------"

echo "1. Info del sistema operativo"

echo "2. Info del hostname y dns"

echo "3. Info de la red"

echo "4. Quien esta conectado"

echo "5. Registro de ultimas visitas"

echo "6. Info de la memoria libre y usada"

echo "7. Salir"

}

# Purpose - Display header message

# $1 - message

function write_header(){

local h="$@"

echo

"---------------------------------------------------------------"

echo " ${h}"

echo

"---------------------------------------------------------------"

}

# Purpose - Get info about your operating system

function os_info(){

write_header " System information "

echo "Operating system : $(uname)"

[ -x $LSB ] && $LSB -a || echo "$LSB command is not insalled

(set \$LSB variable)"

#pause "Press [Enter] key to continue..."

pause

}

# Purpose - Get info about host such as dns, IP, and hostname

function host_info(){

local dnsips=$(sed -e '/^$/d' /etc/resolv.conf | awk '{if

(tolower($1)=="nameserver") print $2}')

write_header " Hostname and DNS information "

echo "Hostname : $(hostname -s)"

echo "DNS domain : $(hostname -d)"

echo "Fully qualified domain name : $(hostname -f)"

echo "Network address (IP) : $(hostname -i)"

echo "DNS name servers (DNS IP) : ${dnsips}"

pause

}

# Purpose - Network inferface and routing info

function net_info(){

devices=$(netstat -i | cut -d" " -f1 | egrep -v

"^Kernel|Iface|lo")

write_header " Network information "

echo "Total network interfaces found : $(wc -w <<<${devices})"

echo "*** IP Addresses Information ***"

ip -4 address show

echo "***********************"

echo "*** Network routing ***"

echo "***********************"

netstat -nr

echo "**************************************"

echo "*** Interface traffic information ***"

echo "**************************************"

netstat -i

pause

}

# Purpose - Display a list of users currently logged on

# display a list of receltly loggged in users

function user_info(){

local cmd="$1"

case "$cmd" in

who) write_header " Who is online "; who -H; pause ;;

last) write_header " List of last logged in users ";

last ; pause ;;

esac

}

# Purpose - Display used and free memory info

function mem_info(){

write_header " Free and used memory "

free -m

echo "*********************************"

echo "*** Virtual memory statistics ***"

echo "*********************************"

vmstat

echo "***********************************"

echo "*** Top 5 memory eating process ***"

echo "***********************************"

ps auxf | sort -nr -k 4 | head -5

pause

}

# Purpose - Get input via the keyboard and make a decision using

case..esac

function read_input(){

local c

read -p "Enter your choice [ 1 - 7 ] " c

case $c in

1) os_info ;;

2) host_info ;;

3) net_info ;;

4) user_info "who" ;;

5) user_info "last" ;;

6) mem_info ;;

7) echo "Bye!"; exit 0 ;;

echo "Please select between 1 to 7 choice only."

pause

esac

}

# ignore CTRL+C, CTRL+Z and quit singles using the trap

trap '' SIGINT SIGQUIT SIGTSTP

# main logic

while true

clear

show_menu # display memu

read_input # wait for user input

done

Guarda y cierra el archivo.

Le damos permisos.

chmod +x infosistema.sh

1	chmod +x infosistema.sh

Lo ejecutamos…

./infosistema.sh

1	./infosistema.sh

o bien…

bash infosistema.sh

1	bash infosistema.sh

Ya lo tenemos.

PD: Para un correcto funcionamiento del script, debes tener instalado y activo el «lsb_core» pues haremos uso del «lsb_release«.

Si no lo tienes instalado veras que es algo simple (el script avisa si lo tienes o no).

Ubuntu, Debian y derivados:

sudo apt-get update && sudo apt-get install lsb-core

1	sudo apt-get update && sudo apt-get install lsb-core

Centos, Rhel y derivados:

sudo yum update && sudo yum install redhat-lsb-core

1	sudo yum update && sudo yum install redhat-lsb-core

Espero te resulte útil el script, en un próximo articulo trataremos el «lsb_release» con más profundidad.

Script bash: Info del sistema con menú

Script bash «Info del sistema con menú»

Agregar comentario

Cancelar respuesta