Is such redirection “|>” just an error or it means something?

Clash Royale CLAN TAG#URR8PPP

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I typed it by mistake but bash didn't print any errors (but created an empty file) so I thought maybe it actually means something ?
(e.g. date |> tmp.txt)

bash io-redirection

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asked 1 hour ago

Bdimych2 Bdimych2

111

add a comment | 

up vote
1
down vote

favorite

I typed it by mistake but bash didn't print any errors (but created an empty file) so I thought maybe it actually means something ?
(e.g. date |> tmp.txt)

bash io-redirection

share|improve this question

asked 1 hour ago

Bdimych2 Bdimych2

111

add a comment | 

up vote
1
down vote

favorite

up vote
1
down vote

favorite

I typed it by mistake but bash didn't print any errors (but created an empty file) so I thought maybe it actually means something ?
(e.g. date |> tmp.txt)

bash io-redirection

share|improve this question

asked 1 hour ago

Bdimych2 Bdimych2

111

I typed it by mistake but bash didn't print any errors (but created an empty file) so I thought maybe it actually means something ?
(e.g. date |> tmp.txt)

bash io-redirection

bash io-redirection

share|improve this question

asked 1 hour ago

Bdimych2 Bdimych2

111

share|improve this question

asked 1 hour ago

Bdimych2 Bdimych2

111

share|improve this question

share|improve this question

asked 1 hour ago

Bdimych2 Bdimych2

111

asked 1 hour ago

Bdimych2 Bdimych2

111

asked 1 hour ago

Bdimych2 Bdimych2

111

111

add a comment | 

add a comment | 

2 Answers
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votes

up vote
4
down vote

That seems to be just a pipeline where the second part is an empty command, only containing the redirection. Writing it as date | >file might make it more easy to interpret. The empty command doesn't do anything but process the redirection, creating the file.

date >| file on the other hand would act as an override for the noclobber shell option, which prevents the regular > from overwriting existing files.

$ touch foo; set -o noclobber
$ date > foo
bash: foo: cannot overwrite existing file
$ date >| foo # works

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answered 1 hour ago

ilkkachu

51.4k678141

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up vote
0
down vote

Yes, it will not throw error because for bash > file means redirect to a file named file. As in your case there is nothing to redirect to file, bash will just create a file name file with nothing in it.

[bd@centos-6.5 my-tests]$ date | > my_file
[bd@centos-6.5 my-tests]$ cat my_file
[bd@centos-6.5 my-tests]$ 

share|improve this answer

edited 13 mins ago

answered 20 mins ago

Bhagyesh Dudhediya

306314

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Funny. Zsh has a different behavior: after the command, my_file contains the output of date.
  – Najib Idrissi
  27 secs ago
  

  
  
  
  

add a comment | 

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

active

oldest

votes

active

oldest

votes

up vote
4
down vote

That seems to be just a pipeline where the second part is an empty command, only containing the redirection. Writing it as date | >file might make it more easy to interpret. The empty command doesn't do anything but process the redirection, creating the file.

date >| file on the other hand would act as an override for the noclobber shell option, which prevents the regular > from overwriting existing files.

$ touch foo; set -o noclobber
$ date > foo
bash: foo: cannot overwrite existing file
$ date >| foo # works

share|improve this answer

answered 1 hour ago

ilkkachu

51.4k678141

add a comment | 

up vote
4
down vote

That seems to be just a pipeline where the second part is an empty command, only containing the redirection. Writing it as date | >file might make it more easy to interpret. The empty command doesn't do anything but process the redirection, creating the file.

date >| file on the other hand would act as an override for the noclobber shell option, which prevents the regular > from overwriting existing files.

$ touch foo; set -o noclobber
$ date > foo
bash: foo: cannot overwrite existing file
$ date >| foo # works

share|improve this answer

answered 1 hour ago

ilkkachu

51.4k678141

add a comment | 

up vote
4
down vote

up vote
4
down vote

That seems to be just a pipeline where the second part is an empty command, only containing the redirection. Writing it as date | >file might make it more easy to interpret. The empty command doesn't do anything but process the redirection, creating the file.

date >| file on the other hand would act as an override for the noclobber shell option, which prevents the regular > from overwriting existing files.

$ touch foo; set -o noclobber
$ date > foo
bash: foo: cannot overwrite existing file
$ date >| foo # works

share|improve this answer

answered 1 hour ago

ilkkachu

51.4k678141

That seems to be just a pipeline where the second part is an empty command, only containing the redirection. Writing it as date | >file might make it more easy to interpret. The empty command doesn't do anything but process the redirection, creating the file.

date >| file on the other hand would act as an override for the noclobber shell option, which prevents the regular > from overwriting existing files.

$ touch foo; set -o noclobber
$ date > foo
bash: foo: cannot overwrite existing file
$ date >| foo # works

share|improve this answer

answered 1 hour ago

ilkkachu

51.4k678141

share|improve this answer

share|improve this answer

answered 1 hour ago

ilkkachu

51.4k678141

answered 1 hour ago

ilkkachu

51.4k678141

answered 1 hour ago

ilkkachu

51.4k678141

51.4k678141

add a comment | 

add a comment | 

up vote
0
down vote

Yes, it will not throw error because for bash > file means redirect to a file named file. As in your case there is nothing to redirect to file, bash will just create a file name file with nothing in it.

[bd@centos-6.5 my-tests]$ date | > my_file
[bd@centos-6.5 my-tests]$ cat my_file
[bd@centos-6.5 my-tests]$ 

share|improve this answer

edited 13 mins ago

answered 20 mins ago

Bhagyesh Dudhediya

306314

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Funny. Zsh has a different behavior: after the command, my_file contains the output of date.
  – Najib Idrissi
  27 secs ago
  

  
  
  
  

add a comment | 

up vote
0
down vote

Yes, it will not throw error because for bash > file means redirect to a file named file. As in your case there is nothing to redirect to file, bash will just create a file name file with nothing in it.

[bd@centos-6.5 my-tests]$ date | > my_file
[bd@centos-6.5 my-tests]$ cat my_file
[bd@centos-6.5 my-tests]$ 

share|improve this answer

edited 13 mins ago

answered 20 mins ago

Bhagyesh Dudhediya

306314

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Funny. Zsh has a different behavior: after the command, my_file contains the output of date.
  – Najib Idrissi
  27 secs ago
  

  
  
  
  

add a comment | 

up vote
0
down vote

up vote
0
down vote

Yes, it will not throw error because for bash > file means redirect to a file named file. As in your case there is nothing to redirect to file, bash will just create a file name file with nothing in it.

[bd@centos-6.5 my-tests]$ date | > my_file
[bd@centos-6.5 my-tests]$ cat my_file
[bd@centos-6.5 my-tests]$ 

share|improve this answer

edited 13 mins ago

answered 20 mins ago

Bhagyesh Dudhediya

306314

Yes, it will not throw error because for bash > file means redirect to a file named file. As in your case there is nothing to redirect to file, bash will just create a file name file with nothing in it.

[bd@centos-6.5 my-tests]$ date | > my_file
[bd@centos-6.5 my-tests]$ cat my_file
[bd@centos-6.5 my-tests]$ 

share|improve this answer

edited 13 mins ago

answered 20 mins ago

Bhagyesh Dudhediya

306314

share|improve this answer

share|improve this answer

edited 13 mins ago

edited 13 mins ago

edited 13 mins ago

answered 20 mins ago

Bhagyesh Dudhediya

306314

answered 20 mins ago

Bhagyesh Dudhediya

306314

answered 20 mins ago

Bhagyesh Dudhediya

306314

306314

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Funny. Zsh has a different behavior: after the command, my_file contains the output of date.
  – Najib Idrissi
  27 secs ago
  

  
  
  
  

add a comment | 

• 
  
  
  

  
  

  
  
  
  
  
  

  
  Funny. Zsh has a different behavior: after the command, my_file contains the output of date.
  – Najib Idrissi
  27 secs ago
  

  
  
  
  

Funny. Zsh has a different behavior: after the command, my_file contains the output of date.
– Najib Idrissi
27 secs ago

Funny. Zsh has a different behavior: after the command, my_file contains the output of date.
– Najib Idrissi
27 secs ago

add a comment | 

 

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