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0

I frequently want to do something like this:

 cat file | command > file

(which obviously doesn't work). The only solution I've seen for this is sponge, i.e.

 cat file | command | sponge file

Unfortunately, sponge is not available to me (nor can I install it or any other package).

Is there a more standard quick way to do this without having to break it up every time into multiple commands (pipe to temp file, pipe back to original, delete temp file)? I tried tee for example, and it seems to work, but is it a consistent/safe solution?

pipe tee

share|improve this question

asked 2 hours ago

argentum2fargentum2f

13166 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  If there were a more standard way, sponge wouldn't have had to exist. If you can't install a package, can you create the corresponding shell script to use? (x=$(mktemp); cat > "$x" ; mv "$x" "$1")
  
  – Michael Homer
  2 hours ago
  

  
  
  
  

add a comment
 | 

0

I frequently want to do something like this:

 cat file | command > file

(which obviously doesn't work). The only solution I've seen for this is sponge, i.e.

 cat file | command | sponge file

Unfortunately, sponge is not available to me (nor can I install it or any other package).

Is there a more standard quick way to do this without having to break it up every time into multiple commands (pipe to temp file, pipe back to original, delete temp file)? I tried tee for example, and it seems to work, but is it a consistent/safe solution?

pipe tee

share|improve this question

asked 2 hours ago

argentum2fargentum2f

13166 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  If there were a more standard way, sponge wouldn't have had to exist. If you can't install a package, can you create the corresponding shell script to use? (x=$(mktemp); cat > "$x" ; mv "$x" "$1")
  
  – Michael Homer
  2 hours ago
  

  
  
  
  

add a comment
 | 

I frequently want to do something like this:

 cat file | command > file

(which obviously doesn't work). The only solution I've seen for this is sponge, i.e.

 cat file | command | sponge file

Unfortunately, sponge is not available to me (nor can I install it or any other package).

Is there a more standard quick way to do this without having to break it up every time into multiple commands (pipe to temp file, pipe back to original, delete temp file)? I tried tee for example, and it seems to work, but is it a consistent/safe solution?

pipe tee

share|improve this question

asked 2 hours ago

argentum2fargentum2f

13166 bronze badges

 cat file | command > file

 cat file | command | sponge file

share|improve this question

asked 2 hours ago

argentum2fargentum2f

13166 bronze badges

share|improve this question

asked 2 hours ago

argentum2fargentum2f

13166 bronze badges

asked 2 hours ago

argentum2fargentum2f

13166 bronze badges

asked 2 hours ago

argentum2fargentum2f

13166 bronze badges