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Top Forums Shell Programming and Scripting Issue with output redirection Post 302672127 by pmonika on Monday 16th of July 2012 02:57:55 AM
Old 07-16-2012
Issue with output redirection

Hi,

I am using AIX server. I have a korn shell script where in I am redirecting a line to a file in a while loop:


Code:
while read line
do
     outputline=$line;
     echo $outputline >> "./temp/exec_list_"$ETL_JOB_RUN"_temp"
done < ./temp/exec_list_$ETL_JOB_RUN

Sometimes, when the CPU usage goes upto 99%, the command "echo $outputline >> "./temp/exec_list_"$ETL_JOB_RUN"_temp"" does not work and skips to the next step. I think, the writer process is slower than the reader process or we'll have to increase the pipe size.

Any suggestions how this can be achieved?


Moderator's Comments:
Mod Comment Please use code tags next time for your code and data.

Last edited by zaxxon; 07-16-2012 at 10:30 AM.. Reason: code tags, see PM
 

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line(1) 						      General Commands Manual							   line(1)

NAME
line - Reads one line from standard input SYNOPSIS
line STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: line: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
None DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command within a shell command file to read from your terminal. The line command always writes at least a newline character. NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead. EXIT STATUS
Success. End-of-File. EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log This shell procedure displays the message: Enter comments for the log: It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon) prompt. See the echo command for information about the c escape sequence. SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p) Functions: read(2) Standards: standards(5) line(1)
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