log_cleaning_commands.sh
· 750 B · Bash
Raw
#!/bin/bash
# Define log file paths
AUTH_LOG="/var/log/auth.log"
BTMP_LOG="/var/log/btmp"
WTMP_LOG="/var/log/wtmp"
LASTLOG="/var/log/lastlog"
SYSLOG="/var/log/syslog"
MAIL_LOG="/var/log/mail.log"
# Clear specific log files
sudo truncate -s 0 $AUTH_LOG $BTMP_LOG $WTMP_LOG
sudo truncate -s 0 $LASTLOG
# Remove old compressed log files
sudo rm -f $AUTH_LOG.{1,2.gz,3.gz,4.gz}
sudo rm -f $SYSLOG.{1,2.gz,3.gz,4.gz}
sudo rm -f $MAIL_LOG.{1,2.gz,3.gz,4.gz}
# Reset lastlog and ensure permissions are correct
sudo cp /dev/null $LASTLOG
sudo chmod 644 $LASTLOG
# Reset failed login attempts
sudo faillog -r
# Clear remaining large files (optional)
sudo rm -f $BTMP_LOG.1
# Confirmation message
echo "Log files have been cleared and old logs removed."
| 1 | #!/bin/bash |
| 2 | |
| 3 | # Define log file paths |
| 4 | AUTH_LOG="/var/log/auth.log" |
| 5 | BTMP_LOG="/var/log/btmp" |
| 6 | WTMP_LOG="/var/log/wtmp" |
| 7 | LASTLOG="/var/log/lastlog" |
| 8 | SYSLOG="/var/log/syslog" |
| 9 | MAIL_LOG="/var/log/mail.log" |
| 10 | |
| 11 | # Clear specific log files |
| 12 | sudo truncate -s 0 $AUTH_LOG $BTMP_LOG $WTMP_LOG |
| 13 | sudo truncate -s 0 $LASTLOG |
| 14 | |
| 15 | # Remove old compressed log files |
| 16 | sudo rm -f $AUTH_LOG.{1,2.gz,3.gz,4.gz} |
| 17 | sudo rm -f $SYSLOG.{1,2.gz,3.gz,4.gz} |
| 18 | sudo rm -f $MAIL_LOG.{1,2.gz,3.gz,4.gz} |
| 19 | |
| 20 | # Reset lastlog and ensure permissions are correct |
| 21 | sudo cp /dev/null $LASTLOG |
| 22 | sudo chmod 644 $LASTLOG |
| 23 | |
| 24 | # Reset failed login attempts |
| 25 | sudo faillog -r |
| 26 | |
| 27 | # Clear remaining large files (optional) |
| 28 | sudo rm -f $BTMP_LOG.1 |
| 29 | |
| 30 | # Confirmation message |
| 31 | echo "Log files have been cleared and old logs removed." |