AIX 5.3 - There is no process to read data written to a pipe - UNIX for Advanced & Expert Users

vigsgb · #1 04-18-2005

I have the following code which works on AIX 4.3 but fails at times on AIX 5.3
with:

cat: 0652-054 cannot write to output. There is no process to read data written to a pipe.

Code:

validator="${validator_exe} ${validator_parms}"
               cmd_line="${CAT} ${data_file} | ${validator} 2>${validator_errors}"
               if [ "${create_new_files}" = "Y" ]
               then
                  #
                  # update the command-line to redirect the translated data to a file
                  #
                  cmd_line="${cmd_line} 1> ${new_file}"
                  print "         Input file : ${real_data_file}"
                  print "         Output file: ${new_file}"
               fi
               #
               # run the validator and save the return code
               #
               eval ${cmd_line}
               validator_rc=$?

If I switch the code to use a redirect instead of a pipe for the following line of code it works everytime.

From This:

Code:

cmd_line="${CAT} ${data_file} | ${validator} 2>${validator_errors}"

To This:

Code:

cmd_line="${validator} < ${data_file} 2>${validator_errors}"

Does anyone know anything about why this might occur.

Just Ice · #2 04-20-2005

methinks your "validator" maybe having issues handling input from a pipe since the no-pipe command line always works ... check your "validator" for the bug ...

vigsgb · #3 04-21-2005

I just had this issue occur on a .sh script with the following command:

Code:

cat $filename | head -1

Same thing, change to

Code:

cat $filename > head -1

and it works.

Both of these examples I listed in this post so far, did run for without issues on an AIX 4.3 using sp2 nodes.

I am migrating to P5 running aix 5.3 and that is where the issues are occuring.

I guess it is time to have IBM take a look at this.

Thanks

SnakeEater · #4 06-13-2006

Hi Unix gurus,
I have problem executing remote ssh from cygwin on WIN XP SP2. I have the the public key in the host to have SSH login without the need of password.
I am sure this is not due to path or environment as I can run this within the shell and I added PATH and all necessary LIBPATH within the script.

From windows DOS prompt, i am executing:
ssh user@host /home/user/tmp/prog.ksh

output:

*******************************************************************************
* *
* *
* Welcome to AIX Version 5.2! *
* *
* *
* Please see the README file in /usr/lpp/bos for information pertinent to *
* this release of the AIX Operating System. *
* *
* *
*******************************************************************************
exec(): 0509-036 Cannot load program /home/user/util/bin/tracking because of the following errors:
0509-150 Dependent module liborbixmt.so could not be loaded.
0509-022 Cannot load module liborbixmt.so.
0509-026 System error: A file or directory in the path name does not exist.
/home/user/tmp/prog.ksh: There is no process to read data written to a pipe

thalex · #5 06-21-2006

vigsgb : the only thing i know about that is your file may be bigger than 2 gb

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
Perform action file name written to the pipe	fed.linuxgossip	Shell Programming and Scripting	2	07-23-2008 07:38 AM
How to clear the content of a pipe (STDIN) after it is written to another program?	vvaidyan	High Level Programming	10	05-15-2008 04:08 PM
how to read the data from an excel sheet and use those data as variable in the unix c	Anne Grace	UNIX for Advanced & Expert Users	1	03-03-2008 04:21 AM
Problem in read() from a pipe	JDS	High Level Programming	2	10-13-2006 07:19 AM
check written data	Hitori	Linux	0	07-22-2006 05:46 AM

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode