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Full Discussion: Unable to display correctly the contents of a file without a line feed
Top Forums Shell Programming and Scripting Unable to display correctly the contents of a file without a line feed Post 302215977 by rokky on Thursday 17th of July 2008 04:23:31 PM
Old 07-17-2008
Quote:
Originally Posted by Gato
I am using AIX and ksh.
I need to display the contents of a file that has a pid (process id). Because the file is open, it doesn't have the line feed or new line, so for some reason if I do this:
`cat $pid` , where $pid is the name of the fully qualified file, it displays
test3.sh[12]: 426110: not found

It should display:
426110

I tried to copy the file and then try to run vi through the scripts; and edit it; and save it so that a /n will be added at the end (assuming that that is the problem). The file only has one line which is the number of the process id.
It seems simple, but no luck. Any suggestions please....? thank you
It would help to see your whole script. It appears that line 12 of the script test3.sh consists of the line: `cat $pid`

Is that correct?

Also, just running `cat $pid` as a command does not look valid.

Usually that is done to set an environment varilable, thus I tried something similar in Solaris with ksh:

export rp=rpatches
`cat $rp`
ksh: 1): not found

versus

cat $rp
1) Patch 4157095 applied on Fri Apr...

OR

export catrp=`cat $rp`
echo $catrp
1) Patch 4157095 applied on Fri ...

So in your example:

catPid=`cat $pid`

Then you would manipulate $catPid with commands like:

echo ${catPid}
although that seems a bit redundant...

Anyway, the first 11 lines (and the rest) might seem to have a bearing on the issue, but hard to tell without seeing them. Maybe it will be clearer if you show the whole script.

HTH,
rokky
 

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LEARN ABOUT HPUX

wait

wait(1) 						      General Commands Manual							   wait(1)

NAME

       wait - await process completion

SYNOPSIS

       [pid]

DESCRIPTION

       If  no argument is specified, waits until all processes (started with of the current shell have completed, and reports on abnormal termina-
       tions.  If a numeric argument pid is given and is the process ID of a background process, waits until that process has  completed.   Other-
       wise, if pid is not a background process, exits without waiting for any processes to complete.

       Because the system call must be executed in the parent process, the shell itself executes without creating a new process (see wait(2)).

   Command-Line Arguments
       supports the following command line arguments:

	      The unsigned decimal integer process
			  ID of a command, whose termination is to wait for.

WARNINGS

       Some processes in a 2-or-more-stage pipeline may not be children of the shell, and thus cannot be waited for.

SEE ALSO

       csh(1), ksh(1), sh-posix(1), sh(1), wait(2).

STANDARDS CONFORMANCE

																	   wait(1)
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