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#!/bin/bash
# Licence: GNU GPL v3
Version=2
# Script use: bash name_of_script
# Destiny: Testing system logging with logger , systemd-cat.
#======================{
: << 'Longer_COMMENT'
Version=2
- Attempts were made to increase the speed of the script.
- Added more conditions to notify you if there are missing dependencies.
Longer_COMMENT
#======================{
NC='\e[0m' # Reset Color
GC='\e[0;32m' # Green ECHO
RC='\e[0;31m' # Red Color
echo "-----------------------------------------------------"
echo "Test of message logging programs , version = $Version"
echo "-----------------------------------------------------"
echo " "
echo "========================================={"
echo " Checking dependencies:"
echo " "
Func_STATUS() {
if [[ "$2" == "1" ]] ; then
echo -e "$1 = ${RC} Not installed ${NC}"
elif [[ "$2" == "0" ]] ; then
echo -e "$1 = ${GC} Installed ${NC}"
else
echo -e " Error in the script: State or name unrecognized of variable = ${RC} $1 ${NC}"
fi
}
## 0 = Installed
## 1 = Not installed
[[ ! -f "/var/log/syslog" ]] && Syslog=1 || Syslog=0
[[ -z $(type -P journalctl) ]] && Journalctl=1 || Journalctl=0
[[ -z $(type -P logger) ]] && Logger=1 || Logger=0
[[ -z $(type -P "systemd-cat") ]] && SystemdCat=1 || SystemdCat=0
Func_STATUS "/var/log/syslog" "$Syslog"
Func_STATUS "journalctl" "$Journalctl"
Func_STATUS "logger" "$Logger"
Func_STATUS "systemd-cat" "$SystemdCat"
echo "=========================================}"
echo " "
#----------------------{
## Info
if [[ "$Syslog" == "0" ]] ; then
echo " "
echo -e "${RC} Info: ${NC}"
echo -e "${GC} Note that not all objects have to be in one /var/log/syslog log, ${NC}"
echo -e "${GC} some may be recorded in other system logs. ${NC}"
echo " "
fi
#----------------------}
#==================================================================={
if [[ "$Logger" == "0" ]] ; then
echo "Checking the command: logger"
echo " "
## Useful information:
## man logger
## Example: logger -p auth.alert "Linux Mint test 1"
## Example: logger -p authpriv.alert "Linux Mint test 2"
## You can find also on internet about logging, type in a search engine for example "Linux Logging Complete Guide"
Func_LOOP() {
# Example script rebuilded for Linux Mint Mate 20
for K in {auth,authpriv,cron,daemon,ftp,kern,lpr,mail,news,syslog,user,uucp,local0,local1,local2,local3,local4,local5,local6,local7,security} ; do
for L in {emerg,alert,crit,err,warning,notice,info,debug,panic,error,warn} ; do
# From " man logger "
# kern cannot be generated from userspace process, automatically converted to user
# security deprecated synonym for auth
Func_COMMAND
done
done
}
#------------------------------------------------{
echo " Saving the message to the system log."
## test for Func_LOOP = for debug
# Func_COMMAND() { echo "${K}.${L}" ;}
Func_COMMAND() { logger -p $K.$L "Test logger message, facility $K priority $L" ;}
# From " man logger "
# panic deprecated synonym for emerg
# error deprecated synonym for err
# warn deprecated synonym for warning
# Start Loop with above " Func_COMMAND "
Func_LOOP
#------------------------------------------------}
#------------------{
echo " "
echo " Pause for 2 seconds"
echo " "
sleep 2s
#------------------}
#-------------------------------{
if [[ "$Syslog" == "0" ]] ; then
echo " "
echo " Checking the /var/log/syslog log:"
echo " "
List_syslog="$(grep -i "Test logger message, facility" /var/log/syslog)"
Func_COMMAND() {
grep -q "Test logger message, facility $K priority $L" <<< "$List_syslog" ; Test="$?"
Good_new=" logger /var/log/syslog ${GC}Supported: facility $K priority $L ${NC}"
Bad_new=" logger /var/log/syslog ${RC}Not supported: facility $K priority $L ${NC}"
[[ "$Test" == "0" ]] && echo -e "$Good_new" || echo -e "$Bad_new"
}
Func_LOOP
else
echo " "
echo " The file /var/log/syslog check was skipped."
echo " "
fi
#-------------------------------}
#-------------------------------{
if [[ "$Journalctl" == "0" ]] ; then
echo " "
echo " "
echo " Checking journalctl log: "
echo " "
## --since "1 hour ago" --> List limited to the last hour
List_journalctl="$(journalctl --since "1 hour ago" | grep -i "Test logger message, facility")"
Func_COMMAND() {
grep -q "Test logger message, facility $K priority $L" <<< "$List_journalctl" ; Test="$?"
Good_new=" logger journalctl ${GC}Supported: facility $K priority $L ${NC}"
Bad_new=" logger journalctl ${RC}Not supported: facility $K priority $L ${NC}"
[[ "$Test" == "0" ]] && echo -e "$Good_new" || echo -e "$Bad_new"
}
Func_LOOP
else
echo " "
echo " The journalctl log check was skipped."
echo " "
fi
#-------------------------------}
fi
#===================================================================}
#=================================================={
if [[ "$SystemdCat" == "0" ]] ; then
echo " "
echo " "
echo "Checking the command: systemd-cat"
echo " "
## Useful information:
## man systemd-cat
## Example: echo "example message" | systemd-cat -p notice
## Example: echo "example message" | systemd-cat -level-prefix=5
## https://wiki.archlinux.org/index.php/Systemd/Journal
## https://www.freedesktop.org/software/systemd/man/systemd-cat.html
Func_LOOP() {
## for --level-prefix from " man systemd-cat "
#for N in {0,1,2,3,4,5,6,7} ; do
## for --priority
for N in {emerg,alert,crit,err,warning,notice,info,debug,panic,error,warn} ; do
Func_COMMAND
done
}
#-------------------------------------------{
echo " Saving the message to the system log."
Func_COMMAND() {
echo "Test systemd-cat message, priority $N" | systemd-cat --priority="$N" ; Catch_Error="$?"
[[ ! "$Catch_Error" == 0 ]] && echo " Error while sending priority $N"
}
Func_LOOP
## Info:
## If the priority name is not supported, you will get a message: " Failed to parse priority value. "
## Priority catching has been added to the script because the error message doesn't give enough information.
## Bug: in systemd-cat (249.11-0ubuntu3.6) value " warn " working / supported, but you will see bug.
#-------------------------------------------{
#------------------{
echo " "
echo " Pause for 2 seconds"
echo " "
sleep 2s
#------------------}
#----------------------------------{
if [[ "$Syslog" == "0" ]] ; then
echo " "
echo " Checking the /var/log/syslog log:"
echo " "
List_syslog="$(grep -i "Test systemd-cat message, priority" /var/log/syslog)"
Func_COMMAND() {
grep -q "Test systemd-cat message, priority $N" <<< "$List_syslog" ; Test="$?"
Good_new=" systemd-cat /var/log/syslog ${GC}Supported: priority $N ${NC}"
Bad_new=" systemd-cat /var/log/syslog ${RC}Not supported: priority $N ${NC}"
[[ "$Test" == "0" ]] && echo -e "$Good_new" || echo -e "$Bad_new"
}
Func_LOOP
else
echo " "
echo " The file /var/log/syslog check was skipped."
echo " "
fi
#----------------------------------}
#---------------------------------------{
if [[ "$Journalctl" == "0" ]] ; then
echo " "
echo " Checking journalctl log:"
echo " "
## --since "1 hour ago" --> List limited to the last hour
List_journalctl="$(journalctl --since "1 hour ago" | grep -i "Test systemd-cat message, priority")"
Func_COMMAND() {
grep -q "Test systemd-cat message, priority $N" <<< "$List_journalctl" ; Test="$?"
Good_new=" systemd-cat journalctl ${GC}Supported: priority $N ${NC}"
Bad_new=" systemd-cat journalctl ${RC}Not supported: priority $N ${NC}"
[[ "$Test" == "0" ]] && echo -e "$Good_new" || echo -e "$Bad_new"
}
Func_LOOP
else
echo " "
echo " The journalctl log check was skipped."
echo " "
fi
#---------------------------------------}
fi
#==================================================}
