Does a job scheduled in crontab run even when I log out?
9
I add some job in crontab file on a server.
When I log out and the server is still on, will the job still run?
Does it matter if I create a screen or tmux session and run some shell in it and detach it before log out?
cron
asked Apr 21 '15 at 13:03
TimTim
26.3k74246455
add a comment |
9
I add some job in crontab file on a server.
When I log out and the server is still on, will the job still run?
Does it matter if I create a screen or tmux session and run some shell in it and detach it before log out?
cron
asked Apr 21 '15 at 13:03
TimTim
26.3k74246455
add a comment |
9
9
9
1
I add some job in crontab file on a server.
When I log out and the server is still on, will the job still run?
Does it matter if I create a screen or tmux session and run some shell in it and detach it before log out?
cron
asked Apr 21 '15 at 13:03
TimTim
26.3k74246455
I add some job in crontab file on a server.
When I log out and the server is still on, will the job still run?
Does it matter if I create a screen or tmux session and run some shell in it and detach it before log out?
cron
cron
asked Apr 21 '15 at 13:03
TimTim
26.3k74246455
asked Apr 21 '15 at 13:03
TimTim
26.3k74246455
asked Apr 21 '15 at 13:03
TimTim
26.3k74246455
asked Apr 21 '15 at 13:03
TimTim
26.3k74246455
asked Apr 21 '15 at 13:03
TimTim
26.3k74246455
26.3k74246455
add a comment |
add a comment |
2 Answers
2
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17
cron is a process which deals with scheduled tasks whether you are logged in or not. It is not necessary to have a screen or tmux session running since the cron daemon will execute the scheduled tasks in separate shells.
See man cron and man crontab for details.
edited Jan 11 '18 at 11:52
Jeff Schaller
39k1053125
answered Apr 21 '15 at 13:07
LambertLambert
8,85721128
when I log out, which user will run and own the job scheduled in crontab? If it is not me, can that cause some potential problem?
– Tim
Apr 21 '15 at 13:08
That depends on which crontab you edited. If you edit the crontab of a user the entries are executed as that user. If you edited the /etc/crontab file the user is often specified between the interval and the command like: "17 * * * * root cd / && run-parts --report /etc/cron.hourly". Besides it does also depend on the platform you are using. Ubuntu uses a different cron than for instance Solaris
– Lambert
Apr 21 '15 at 13:14
I use ubuntu. What is "the crontab of a user"? In "the crontab of a user", can I also specify which user will run a scheduled job?
– Tim
Apr 21 '15 at 13:26
Ubuntu cron has some explanation text in the crontab files. As a user performcrontab -eto read about the user crontab file andcat /etc/crontabto read about the server-wide crontab file. From a user crontab file you can not run commands using a different user although it is possible to use sudo if passwordless commands are specified
– Lambert
Apr 21 '15 at 13:33
Thanks./etc/crontabis for system-wide, then where is the crontab file for a user?
– Tim
Apr 21 '15 at 19:42
|
show 4 more comments
0
The crontab file for a user is edited by running 'crontab -e'.
answered 13 mins ago
Brian H.Brian H.
1
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Brian H. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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2 Answers
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2 Answers
2
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active
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17
cron is a process which deals with scheduled tasks whether you are logged in or not. It is not necessary to have a screen or tmux session running since the cron daemon will execute the scheduled tasks in separate shells.
See man cron and man crontab for details.
edited Jan 11 '18 at 11:52
Jeff Schaller
39k1053125
answered Apr 21 '15 at 13:07
LambertLambert
8,85721128
when I log out, which user will run and own the job scheduled in crontab? If it is not me, can that cause some potential problem?
– Tim
Apr 21 '15 at 13:08
That depends on which crontab you edited. If you edit the crontab of a user the entries are executed as that user. If you edited the /etc/crontab file the user is often specified between the interval and the command like: "17 * * * * root cd / && run-parts --report /etc/cron.hourly". Besides it does also depend on the platform you are using. Ubuntu uses a different cron than for instance Solaris
– Lambert
Apr 21 '15 at 13:14
I use ubuntu. What is "the crontab of a user"? In "the crontab of a user", can I also specify which user will run a scheduled job?
– Tim
Apr 21 '15 at 13:26
Ubuntu cron has some explanation text in the crontab files. As a user performcrontab -eto read about the user crontab file andcat /etc/crontabto read about the server-wide crontab file. From a user crontab file you can not run commands using a different user although it is possible to use sudo if passwordless commands are specified
– Lambert
Apr 21 '15 at 13:33
Thanks./etc/crontabis for system-wide, then where is the crontab file for a user?
– Tim
Apr 21 '15 at 19:42
|
show 4 more comments
17
cron is a process which deals with scheduled tasks whether you are logged in or not. It is not necessary to have a screen or tmux session running since the cron daemon will execute the scheduled tasks in separate shells.
See man cron and man crontab for details.
edited Jan 11 '18 at 11:52
Jeff Schaller
39k1053125
answered Apr 21 '15 at 13:07
LambertLambert
8,85721128
when I log out, which user will run and own the job scheduled in crontab? If it is not me, can that cause some potential problem?
– Tim
Apr 21 '15 at 13:08
That depends on which crontab you edited. If you edit the crontab of a user the entries are executed as that user. If you edited the /etc/crontab file the user is often specified between the interval and the command like: "17 * * * * root cd / && run-parts --report /etc/cron.hourly". Besides it does also depend on the platform you are using. Ubuntu uses a different cron than for instance Solaris
– Lambert
Apr 21 '15 at 13:14
I use ubuntu. What is "the crontab of a user"? In "the crontab of a user", can I also specify which user will run a scheduled job?
– Tim
Apr 21 '15 at 13:26
Ubuntu cron has some explanation text in the crontab files. As a user performcrontab -eto read about the user crontab file andcat /etc/crontabto read about the server-wide crontab file. From a user crontab file you can not run commands using a different user although it is possible to use sudo if passwordless commands are specified
– Lambert
Apr 21 '15 at 13:33
Thanks./etc/crontabis for system-wide, then where is the crontab file for a user?
– Tim
Apr 21 '15 at 19:42
|
show 4 more comments
17
17
17
cron is a process which deals with scheduled tasks whether you are logged in or not. It is not necessary to have a screen or tmux session running since the cron daemon will execute the scheduled tasks in separate shells.
See man cron and man crontab for details.
edited Jan 11 '18 at 11:52
Jeff Schaller
39k1053125
answered Apr 21 '15 at 13:07
LambertLambert
8,85721128
cron is a process which deals with scheduled tasks whether you are logged in or not. It is not necessary to have a screen or tmux session running since the cron daemon will execute the scheduled tasks in separate shells.
See man cron and man crontab for details.
edited Jan 11 '18 at 11:52
Jeff Schaller
39k1053125
answered Apr 21 '15 at 13:07
LambertLambert
8,85721128
edited Jan 11 '18 at 11:52
Jeff Schaller
39k1053125
edited Jan 11 '18 at 11:52
Jeff Schaller
39k1053125
edited Jan 11 '18 at 11:52
Jeff Schaller
39k1053125
39k1053125
answered Apr 21 '15 at 13:07
LambertLambert
8,85721128
answered Apr 21 '15 at 13:07
LambertLambert
8,85721128
answered Apr 21 '15 at 13:07
LambertLambert
8,85721128
8,85721128
when I log out, which user will run and own the job scheduled in crontab? If it is not me, can that cause some potential problem?
– Tim
Apr 21 '15 at 13:08
That depends on which crontab you edited. If you edit the crontab of a user the entries are executed as that user. If you edited the /etc/crontab file the user is often specified between the interval and the command like: "17 * * * * root cd / && run-parts --report /etc/cron.hourly". Besides it does also depend on the platform you are using. Ubuntu uses a different cron than for instance Solaris
– Lambert
Apr 21 '15 at 13:14
I use ubuntu. What is "the crontab of a user"? In "the crontab of a user", can I also specify which user will run a scheduled job?
– Tim
Apr 21 '15 at 13:26
Ubuntu cron has some explanation text in the crontab files. As a user performcrontab -eto read about the user crontab file andcat /etc/crontabto read about the server-wide crontab file. From a user crontab file you can not run commands using a different user although it is possible to use sudo if passwordless commands are specified
– Lambert
Apr 21 '15 at 13:33
Thanks./etc/crontabis for system-wide, then where is the crontab file for a user?
– Tim
Apr 21 '15 at 19:42
|
show 4 more comments
when I log out, which user will run and own the job scheduled in crontab? If it is not me, can that cause some potential problem?
– Tim
Apr 21 '15 at 13:08
That depends on which crontab you edited. If you edit the crontab of a user the entries are executed as that user. If you edited the /etc/crontab file the user is often specified between the interval and the command like: "17 * * * * root cd / && run-parts --report /etc/cron.hourly". Besides it does also depend on the platform you are using. Ubuntu uses a different cron than for instance Solaris
– Lambert
Apr 21 '15 at 13:14
I use ubuntu. What is "the crontab of a user"? In "the crontab of a user", can I also specify which user will run a scheduled job?
– Tim
Apr 21 '15 at 13:26
Ubuntu cron has some explanation text in the crontab files. As a user performcrontab -eto read about the user crontab file andcat /etc/crontabto read about the server-wide crontab file. From a user crontab file you can not run commands using a different user although it is possible to use sudo if passwordless commands are specified
– Lambert
Apr 21 '15 at 13:33
Thanks./etc/crontabis for system-wide, then where is the crontab file for a user?
– Tim
Apr 21 '15 at 19:42
when I log out, which user will run and own the job scheduled in crontab? If it is not me, can that cause some potential problem?
– Tim
Apr 21 '15 at 13:08
when I log out, which user will run and own the job scheduled in crontab? If it is not me, can that cause some potential problem?
– Tim
Apr 21 '15 at 13:08
That depends on which crontab you edited. If you edit the crontab of a user the entries are executed as that user. If you edited the /etc/crontab file the user is often specified between the interval and the command like: "17 * * * * root cd / && run-parts --report /etc/cron.hourly". Besides it does also depend on the platform you are using. Ubuntu uses a different cron than for instance Solaris
– Lambert
Apr 21 '15 at 13:14
That depends on which crontab you edited. If you edit the crontab of a user the entries are executed as that user. If you edited the /etc/crontab file the user is often specified between the interval and the command like: "17 * * * * root cd / && run-parts --report /etc/cron.hourly". Besides it does also depend on the platform you are using. Ubuntu uses a different cron than for instance Solaris
– Lambert
Apr 21 '15 at 13:14
I use ubuntu. What is "the crontab of a user"? In "the crontab of a user", can I also specify which user will run a scheduled job?
– Tim
Apr 21 '15 at 13:26
I use ubuntu. What is "the crontab of a user"? In "the crontab of a user", can I also specify which user will run a scheduled job?
– Tim
Apr 21 '15 at 13:26
Ubuntu cron has some explanation text in the crontab files. As a user perform
crontab -e to read about the user crontab file and cat /etc/crontab to read about the server-wide crontab file. From a user crontab file you can not run commands using a different user although it is possible to use sudo if passwordless commands are specified– Lambert
Apr 21 '15 at 13:33
Ubuntu cron has some explanation text in the crontab files. As a user perform
crontab -e to read about the user crontab file and cat /etc/crontab to read about the server-wide crontab file. From a user crontab file you can not run commands using a different user although it is possible to use sudo if passwordless commands are specified– Lambert
Apr 21 '15 at 13:33
Thanks.
/etc/crontab is for system-wide, then where is the crontab file for a user?– Tim
Apr 21 '15 at 19:42
Thanks.
/etc/crontab is for system-wide, then where is the crontab file for a user?– Tim
Apr 21 '15 at 19:42
|
show 4 more comments
0
The crontab file for a user is edited by running 'crontab -e'.
answered 13 mins ago
Brian H.Brian H.
1
New contributor
Brian H. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
0
The crontab file for a user is edited by running 'crontab -e'.
answered 13 mins ago
Brian H.Brian H.
1
New contributor
Brian H. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
0
0
0
The crontab file for a user is edited by running 'crontab -e'.
answered 13 mins ago
Brian H.Brian H.
1
New contributor
Brian H. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
The crontab file for a user is edited by running 'crontab -e'.
answered 13 mins ago
Brian H.Brian H.
1
New contributor
Brian H. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 13 mins ago
Brian H.Brian H.
1
New contributor
Brian H. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 13 mins ago
Brian H.Brian H.
1
answered 13 mins ago
Brian H.Brian H.
1
1
New contributor
Brian H. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Brian H. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Brian H. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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