Hello, this is for my INTRO to Linux class. We are using BASH and Vi editor. Tha

Question

Hello, this is for my INTRO to Linux class. We are using BASH and Vi editor. Thanks for the help in advance.

STAGE 3 | Log Rotate More Info: man logrotate

To prevent logs from getting too big and eventually taking up the entire disk space of a server we need to rotate the logs. Rotating will take old logs that meet set rules and compress them. It will then start a new fresh log. The old compressed logs will continue to be saved until another threshold is met where the oldest compressed log will be deleted. Usually a log is rotated daily and compressed logs are kept for 7 days.

Create a configuration file to handle log rotation. The configuration file should be named ‘logrotate.conf’ and should be located within your home directory. Use the following rules for your logrotate configuration:

• Up to a maximum of 6 log files should be rotated
• Logs are to be rotated daily
• The log files older than one complete cycle are compressed
• Empty files are subject to log rotation
• The postrotate command is used to recreate the original log file • You must rotate both Server_Info.log and Server_Hourly.log

You can test your configuration file via the following steps: 1. Create a state file called /tmp/$USER.$$ (i.e, touch it)

2. Run the command (3-4 times)

% logrotate --state /tmp/$USER.$$ -f logrotate.conf

3. By using the ls command, you should have output similar to:

$ ls -l *.log* # should get your filenames instead of test

-rw-r--r-- 1 steve users 0 Mar 17 14:49 test.log.1.gz -rw-r--r-- 1 steve users 37 Mar 17 14:48 test.log.2.gz -rw-r--r-- 1 steve users 30 Mar 17 14:40 test.log.3.gz

Explanation / Answer

Well, it seems few information is missing but lemme paste the scripts:

log_copy.bash

#!/bin/bash

LAST_HOUR=$(( $(date +%l) - 1 ))

SEARCH_STRING=$(date +"%b-%d-%Y-${LAST_HOUR}:")

grep "${SEARCH_STRING}" > "/home/users/vijay/log/Server_Hourly.log"

------------------------------------------------------------------------------------------

Now, create one file named scheduler with below mentioned content:

scheduler

#!/bin/bash
PATH=/bin;/usr/local/bin;/usr/bin;/usr/sbin;/sbin;
*/10 * * * * bash /home/users/vijay/your_username/script/IsTheServerUp.bash
0 * * * * bash /home/users/vijay/your_username/script/log_copy.bash

---------------------------------------------------------------------------------------------------------

Now, execute below menioned command to schedule the jobs. It will directly schedule the job without any need for an editor:

sudo crontab /path-to-scheduler/scheduler

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