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How to solve “Broken Pipe” error when using awk with head

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1

1

I'm getting broken pipe errors from a command that does something like:

ls -tr1 /a/path | awk -F 'n' -vpath=/prepend/path/ '{print path$1}' | head -n 50

Essentially I want to list (with absolute path) the oldest X files in a directory.

What seems to happen is that the output is correct (I get 50 file paths output) but that when head has output the 50 files it closes stdin causing awk to throw a broken pipe error as it is still outputting more rows.

linux pipe awk head

share|improve this question

edited Nov 28 '11 at 17:12

slhck

162k47448470

asked Nov 28 '11 at 15:23

JonJon

63

bumped to the homepage by Community♦ 10 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Please answer your question using the answer your question button below as soon as you can! Then you can even get reputation for it and accept it.
  
  – slhck
  Nov 28 '11 at 17:11
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I would have, but as a new user I can't do that for another... 5 hours apparently. I wanted to write the answer down so I didn't forget.
  
  – Jon
  Nov 28 '11 at 17:11
  
  
  

  
  
  
  

add a comment | 

1

1

I'm getting broken pipe errors from a command that does something like:

ls -tr1 /a/path | awk -F 'n' -vpath=/prepend/path/ '{print path$1}' | head -n 50

Essentially I want to list (with absolute path) the oldest X files in a directory.

What seems to happen is that the output is correct (I get 50 file paths output) but that when head has output the 50 files it closes stdin causing awk to throw a broken pipe error as it is still outputting more rows.

linux pipe awk head

share|improve this question

edited Nov 28 '11 at 17:12

slhck

162k47448470

asked Nov 28 '11 at 15:23

JonJon

63

bumped to the homepage by Community♦ 10 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Please answer your question using the answer your question button below as soon as you can! Then you can even get reputation for it and accept it.
  
  – slhck
  Nov 28 '11 at 17:11
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I would have, but as a new user I can't do that for another... 5 hours apparently. I wanted to write the answer down so I didn't forget.
  
  – Jon
  Nov 28 '11 at 17:11
  
  
  

  
  
  
  

add a comment | 

I'm getting broken pipe errors from a command that does something like:

ls -tr1 /a/path | awk -F 'n' -vpath=/prepend/path/ '{print path$1}' | head -n 50

Essentially I want to list (with absolute path) the oldest X files in a directory.

What seems to happen is that the output is correct (I get 50 file paths output) but that when head has output the 50 files it closes stdin causing awk to throw a broken pipe error as it is still outputting more rows.

linux pipe awk head

share|improve this question

edited Nov 28 '11 at 17:12

slhck

162k47448470

asked Nov 28 '11 at 15:23

JonJon

63

ls -tr1 /a/path | awk -F 'n' -vpath=/prepend/path/ '{print path$1}' | head -n 50

share|improve this question

edited Nov 28 '11 at 17:12

slhck

162k47448470

asked Nov 28 '11 at 15:23

JonJon

63

share|improve this question

edited Nov 28 '11 at 17:12

slhck

162k47448470

asked Nov 28 '11 at 15:23

JonJon

63

edited Nov 28 '11 at 17:12

slhck

162k47448470

edited Nov 28 '11 at 17:12

slhck

162k47448470

asked Nov 28 '11 at 15:23

JonJon

63

asked Nov 28 '11 at 15:23

JonJon

63

ls -t1 /a/path | tail -n 50 | awk -F 'n' -vpath=/prepend/path/ '{print path$1}'

ls -t1 /a/path | tail -n 50 | awk -F 'n' -vpath=/prepend/path/ '{print path$1}'

ls -t1 /a/path | tail -n 50 | awk -F 'n' -vpath=/prepend/path/ '{print path$1}'

ls -t1 /a/path | tail -n 50 | awk -F 'n' -vpath=/prepend/path/ '{print path$1}'

ls -t1 /a/path | tail -n 50 | awk -F 'n' -vpath=/prepend/path/ '{print path$1}'