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tar contents in current directory to stdout

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0

I am trying to tar the current directory and stream to stdout (ultimately to Amazon S3)...I have this command:

tar  -cf -  . 

but I get this error:

tar: Refusing to write archive contents to terminal (missing -f
option?) tar: Error is not recoverable: exiting now

from what I can tell -f - means the file is to stdout, although -f /dev/stdout is probably more explicit.

does anyone know how to form the command correct?

bash shell tar

share|improve this question

asked 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Presumably you don't really want to stream the archive to your terminal - likely you will find that if you pipe it to another process it will be happy (for example, tar -cf - . | tar -tf -)
  
  – steeldriver
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you tried tar -cf - . > /path/file.tar? /path/ can be anywhere so long as it is outside of ./
  
  – Jim L.
  1 hour ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  why wouldn't it work to stream to the terminal though? seems weird that this would fail but -f /dev/stdout would work
  
  – Alexander Mills
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It does work on FreeBSD and Mac OS X, fwiw. But I can understand why the authors of tar might have thought it would be a relatively unlikely use case.
  
  – Jim L.
  59 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It might work if you use cf instead of -cf . What version of tar are you using?
  
  – Mark Plotnick
  55 mins ago
  

  
  
  
  

 | 
show 1 more comment

0

I am trying to tar the current directory and stream to stdout (ultimately to Amazon S3)...I have this command:

tar  -cf -  . 

but I get this error:

tar: Refusing to write archive contents to terminal (missing -f
option?) tar: Error is not recoverable: exiting now

from what I can tell -f - means the file is to stdout, although -f /dev/stdout is probably more explicit.

does anyone know how to form the command correct?

bash shell tar

share|improve this question

asked 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Presumably you don't really want to stream the archive to your terminal - likely you will find that if you pipe it to another process it will be happy (for example, tar -cf - . | tar -tf -)
  
  – steeldriver
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you tried tar -cf - . > /path/file.tar? /path/ can be anywhere so long as it is outside of ./
  
  – Jim L.
  1 hour ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  why wouldn't it work to stream to the terminal though? seems weird that this would fail but -f /dev/stdout would work
  
  – Alexander Mills
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It does work on FreeBSD and Mac OS X, fwiw. But I can understand why the authors of tar might have thought it would be a relatively unlikely use case.
  
  – Jim L.
  59 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It might work if you use cf instead of -cf . What version of tar are you using?
  
  – Mark Plotnick
  55 mins ago
  

  
  
  
  

 | 
show 1 more comment

I am trying to tar the current directory and stream to stdout (ultimately to Amazon S3)...I have this command:

tar  -cf -  . 

but I get this error:

tar: Refusing to write archive contents to terminal (missing -f
option?) tar: Error is not recoverable: exiting now

from what I can tell -f - means the file is to stdout, although -f /dev/stdout is probably more explicit.

does anyone know how to form the command correct?

bash shell tar

share|improve this question

asked 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

tar  -cf -  . 

share|improve this question

asked 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

share|improve this question

asked 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

asked 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

asked 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

1 Answer
1

active

oldest

votes

0

So this seemed to work:

tar  -cf /dev/stdout  .

but I am looking for a way to just omit the -f /dev/stdout part if possible.

share|improve this answer

answered 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I am trying to stream to s3 not a file, and yeah I tried the -cf - bullshit in the OP and didn't work :(
  
  – Alexander Mills
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  As @steeldriver says, all will be well once you add a pipe. $ tar -cf - . | wc yields 242 676 40960 so something like `tar -cf - . | ssh s3.example.com tar -tf -' will work.
  
  – Jim L.
  51 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  to stream to S3 you need to pipe it to a program that will copy STDIN to an S3 object. aws s3 cp /dev/stdin ... refuses to use /dev/stdin from a pipe. i might try to write a python script to do this.
  
  – Skaperen
  37 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  as for tar, i do tar bcf 1 - <whatiwanttomakeatarof> all the time. or you can leave out the b and the 1 and make a slightly larger tarball. either way, you need to figure out where you want the tar data to go on your computer to get it to S3 (your terminal won't do that).
  
  – Skaperen
  30 mins ago
  

  
  
  
  

add a comment | 

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0

So this seemed to work:

tar  -cf /dev/stdout  .

but I am looking for a way to just omit the -f /dev/stdout part if possible.

share|improve this answer

answered 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I am trying to stream to s3 not a file, and yeah I tried the -cf - bullshit in the OP and didn't work :(
  
  – Alexander Mills
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  As @steeldriver says, all will be well once you add a pipe. $ tar -cf - . | wc yields 242 676 40960 so something like `tar -cf - . | ssh s3.example.com tar -tf -' will work.
  
  – Jim L.
  51 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  to stream to S3 you need to pipe it to a program that will copy STDIN to an S3 object. aws s3 cp /dev/stdin ... refuses to use /dev/stdin from a pipe. i might try to write a python script to do this.
  
  – Skaperen
  37 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  as for tar, i do tar bcf 1 - <whatiwanttomakeatarof> all the time. or you can leave out the b and the 1 and make a slightly larger tarball. either way, you need to figure out where you want the tar data to go on your computer to get it to S3 (your terminal won't do that).
  
  – Skaperen
  30 mins ago
  

  
  
  
  

add a comment | 

0

So this seemed to work:

tar  -cf /dev/stdout  .

but I am looking for a way to just omit the -f /dev/stdout part if possible.

share|improve this answer

answered 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I am trying to stream to s3 not a file, and yeah I tried the -cf - bullshit in the OP and didn't work :(
  
  – Alexander Mills
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  As @steeldriver says, all will be well once you add a pipe. $ tar -cf - . | wc yields 242 676 40960 so something like `tar -cf - . | ssh s3.example.com tar -tf -' will work.
  
  – Jim L.
  51 mins ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  to stream to S3 you need to pipe it to a program that will copy STDIN to an S3 object. aws s3 cp /dev/stdin ... refuses to use /dev/stdin from a pipe. i might try to write a python script to do this.
  
  – Skaperen
  37 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  as for tar, i do tar bcf 1 - <whatiwanttomakeatarof> all the time. or you can leave out the b and the 1 and make a slightly larger tarball. either way, you need to figure out where you want the tar data to go on your computer to get it to S3 (your terminal won't do that).
  
  – Skaperen
  30 mins ago
  

  
  
  
  

add a comment | 

So this seemed to work:

tar  -cf /dev/stdout  .

but I am looking for a way to just omit the -f /dev/stdout part if possible.

share|improve this answer

answered 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

tar  -cf /dev/stdout  .

share|improve this answer

answered 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

answered 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges

answered 1 hour ago

Alexander MillsAlexander Mills

2,45422 gold badges2121 silver badges6767 bronze badges