Please post the exact parameters supplied to the script and mention what Shell this is.
Btw. What precisely is foobar in this context ?
It may have been running for 5 years but I for one cannot work out what this script is intended to do. Can you describe the process in words?
Please also post a complete script as this snippet reads as syntactically-incorrect nonsense.
---------- Post updated at 05:02 PM ---------- Previous update was at 04:55 PM ----------
Question : Can system load be playing a role here ? Like output of find command not properly communicated to mv command and mv ends up with having empty string as src.
Just speculating...
Last edited by methyl; 05-01-2012 at 10:27 AM..
Reason: please use code tags
My guess is this:
If the total command line length is exceeded, then xargs calls the utility n times with fewer arguments. The first n-1 times with the maximum allowable line length and the last time with whatever remains. But since in this script the target directory is stuck on to the end, the total line length is exceeded for the mv command for the first n iterations, so these iterations of mv fail perhaps since the length is exceeded, or since the target directory is missing among it arguments. The last iteration gets passed what is left and thus had a lower line length and succeeds, so part of the files do get moved.
So the next time the script gets called, there are fewer files and this time there may be no error, because the total command line length does not get exceeded...
You could try lowering the command line length that xargs passes with the "-s" option.
stmt_cnt=$(ls -1 ${1}/${2}|wc -l)
if [ ${stmt_cnt} -ne 0 -a ${stmt_cnt} -lt 501 ]; then
out_str="${out_str}\n$(date +"%Y%m%d%H%M%S"): Moving ${stmt_cnt} \"${2}\" statements from ${1} to ${3}\n"
find ${1} -name "${2}" | sort -t"_" +7n +8n | xargs ksh -c 'mv $* '"${3}" foobar fi
The script needs urgent revision because it has some serious problems which may not produce syntax errors or error messages (?) but which cause alarming process anomalies due to command truncation in AIX. Have you counted the number of input files and compared with the number of output files?
I would suggest avoiding any unlimited xargs in AIX and executing comands one-by-one. Credit: Scrutinizer picked up on this.
I have no idea what the sort is for and IMHO the ksh command line with the foobar is a botch to lose a surplus parameter when the command line is too long.
You clearly did not write this script but it is hard to justify that this script works despite the absence of reported syntax or other error messages.
Sorry to be so abrupt but that ksh line is a real problem.
Quote:
Agreed, foobar is confusing here but works so syntax is not an issue
The script needs urgent revision because it has some serious problems which may not produce syntax errors or error messages (?) but which cause alarming process anomalies due to command truncation in AIX. Have you counted the number of input files and compared with the number of output files?
I would suggest avoiding any unlimited xargs in AIX and executing comands one-by-one. Credit: Scrutinizer picked up on this.
Yes, this script is working in production as intended.
FYI.. -type f is not required
I have no idea what the sort is for and IMHO the ksh command line with the foobar is a botch to lose a surplus parameter when the command line is too long.
You clearly did not write this script but it is hard to justify that this script works despite the absence of reported syntax or other error messages.
Sorry to be so abrupt but that ksh line is a real problem.
Are you really sure? I'm not so sure.
Did you try out before asking ? As I mentioned , it's working for years in PRODUCTION how can you blame the syntax.
Let's assume that $3 is a pre-existing writeable directory. We don't know anything about $2, but that could be the subject of the next post.
Couldn't post the entire script due to copyright. Don't need tutorial on positional parameters. Anyway this discussion didn't head out into right direction.
I bet you understand the problem but have no clue. You are not alone.
Hi Guys -
I'm getting the following error when I run my script:
which: no Data_Export.sh in (.)
However, my code completes with fine with a return code of 0. The above error message gets directed to my error file.
Any ideas?
Here is my script:
#source... (1 Reply)
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if ; then
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{
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