Interested to Buy Any Domain ? << Click Here >> for more details...
What is the procedure of "at" and crontab" commands?
- 4 Answers
- 12181 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / subbareddy kake
at:If you want postpone the excution of process we can use
at command.but you should specify time for running process.
batch:This command also works like at but here no need
specify the time.Unis OS itself decide the time for
processing the job.
crontab:If you want run some jobs at daily or some times u
can keep those jobs in crontab file.those are cronjobs.
crontab -l:To open crontab file
crontab -e:To edit the crontab file
crontab -r:To remove the crontab file
* * * * * job name
star1:min(1 to 59)
star2:hour(0 to 23)
star3:day of the month(1 to 31)
star4:month(1 to 12)
star5:day of the week(0 to 6)
here zero indicates sunday
15 05 * * 1-5 job schedule----->This job will run everday
at 5:15am except sunday.
Like this so many jobs we can keep in one crontab file.
| Is This Answer Correct ? | 10 Yes | 0 No |
Answer / mohan
at - executes single time
crontab- executes Multipuble time
| Is This Answer Correct ? | 7 Yes | 1 No |
Answer / s.rajasekhar
at - executes single time
crontab- executes Multiple time.
at:If you want postpone the excution of process we can use
at command.but you should specify time for running process.
crontab:If you want run some jobs at daily or some times u
can keep those jobs in crontab file.those are cronjobs.
crontab -l:To open crontab file
crontab -e:To edit the crontab file
crontab -r:To remove the crontab file
* * * * * job name
star1:min(1 to 59)
star2:hour(0 to 23)
star3:day of the month(1 to 31)
star4:month(1 to 12)
star5:day of the week(0 to 6)
here zero indicates Sunday
15 05 * * 1-5 job schedule----->This job will run everyday
at 5:15am except Sunday.
Like this so many jobs we can keep in one crontab file.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / ajaya kumar
at time commandname - Executes the command at the
perticular time.
crontab -e and type the scheduled job with appropriate
syntax.
- Executes the script at the scheduled times.
| Is This Answer Correct ? | 3 Yes | 3 No |
How to set sticky bit, or it have any seperate directory to create sticky bit in sunfir servers. Please help me , i don't no the exact answer?
How do you stop a running process?
What is a command and examples?
What is the use of finger command?
What is the use of egrep command in unix?
what is tar command and what are the different types of tar commands?
What does 'mkdir' command do in UNIX?
Why is shebang used?
What is mtime in find command?
what is the use of ls -l command & what is the information it gives about user ?
What Is the command to change a file's creation time. means one file is created at the time 15:19 then time should br changed to 14:14
Who invented grep?
Unix Commands 
