linux - Use I/O redirection between two scripts without waiting for the first to finish -

I have two scripts, we say long.sh and simple.sh: it takes a lot of time, the second is very simple is . The output of the first script should be used as the input of another.

As an example, "long.sh" can be:

  #! For the line in `cat LONGIFLE.dat` tax / bin / sh; # Line to read; # Some complex processing (takes time); The echo went to $ line;  

And the simplest one:

  #! During reading / bin / sh; Do # processing simple; Echo $ a + "other stuff" done;  

I want to script it two scripts:

  sh long.sh | Sh simple.sh  

To use pipelines, wait for the end of the long script before starting simple.sh.

I would like to know if the current line is simple in Bash Shell. It is possible to see the output, so that I can see the time in which row is being processed.

I do not want to merge two scripts together, nor to call simple.sh within long.sh. Thanks a lot.

The standout is normally buffer. You want the line buffer to try

  stdbuf -oL sh long.sh | Sh simple.sh  

Note that this loop

  cat for line in 'LONGIFLE.dat`; Do # see that I've put a semi-colon?  

reads words from the file if you only have one word per line, then you are okay. Otherwise, to read by the rows, use while the IFS = read -r line; Tax ...; Did & lt;

Always quote your variable ( resonant "$ line" ), unless you do not know specifically when and when not.