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How to use Unix Crontab script for Various Jobs and Backups

Create a crontab to perform the tasks listed below at the frequencies specified. Note that you do NOT need to write the actual scripts!

a) Run a backup script named local-backup from the /usr/local/adm directory every weekday at 11:30pm.

b) Execute a cleanup script named weekly-cleanly from the same directory above, every Friday at 4:30am.

c) Every night, produce a list of files that are world-writable.

d) Execute a reporting program, named twice-monthly from the /usr/local/bin directory on the 15th and 31st.

e) Execute a performance report script named perf23 every hour at 15 and 45 minutes after the hour on weekdays between the hours of 6:00am and 6:00pm. The script is located in root's home directory.

Solution Preview

I have attached the solution as asked with easy-to-understand formatting. Just some notes:

1. for c) it is assumed that we need to produce the list of files at midnight and write them to a file named wwfiles.log in the /tmp directory.

2. the world ...

Solution Summary

Gives a detailed explanation on using crontab to perform the tasks listed below at the frequencies specified.

a) Run a backup script named local-backup from the /usr/local/adm directory every weekday at 11:30pm.

b) Execute a cleanup script named weekly-cleanly from the same directory above, every Friday at 4:30am.

c) Every night, produce a list of files that are world-writable.

d) Execute a reporting program, named twice-monthly from the /usr/local/bin directory on the 15th and 31st.

e) Execute a performance report script named perf23 every hour at 15 and 45 minutes after the hour on weekdays between the hours of 6:00am and 6:00pm. The script is located in root's home directory.

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