Concatenation of a large number of files


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# 1  
Concatenation of a large number of files

Hellow i have a large number of files that i want to concatenate to one. these files start with the word 'VOICE_' for example
VOICE_0000000000
VOICE_1223o23u0
VOICE_934934927349

I use the following code:
Code:
 cat /ODS/prepaid/CDR_FLOW/MEDIATION/VOICE_* >> /ODS/prepaid/CDR_FLOW/WORK/VOICE

And i get an error that files are too long!

How can i overcome this?

Best Regards,
Christos

Last edited by vbe; 11-16-2010 at 11:56 AM.. Reason: code tags please
# 2  
1) If you get an error message, please post the exact error message.
2) Always state what Operating System and Shell you are using.


One idea (assuming only one depth of directory tree) which avoids expanding "*" in the shell is:

Code:
find /ODS/prepaid/CDR_FLOW/MEDIATION/ -type f -name VOICE_\* -print | while read filename
do
        cat "${filename}" >> /ODS/prepaid/CDR_FLOW/WORK/VOICE
done


Last edited by methyl; 11-16-2010 at 12:19 PM.. Reason: spellin & add -type f
# 3  
Try:
Code:
for i in /ODS/prepaid/CDR_FLOW/MEDIATION/VOICE_*
do
  cat "$i" >> /ODS/prepaid/CDR_FLOW/WORK/VOICE
done

# 4  
Smilie--removed--

Last edited by ctsgnb; 11-16-2010 at 12:43 PM.. Reason: Thx to Scruti noticing me i missed post #1...Morning!
# 5  
@Scrutinizer and ctsngb
When the O/P comes back with the O/S I predict that it will be AIX or something which cannot deal with long command lines after expansion of "*" in Shell.

Apologies to ctsgnb because our posts crossed.

Last edited by methyl; 11-16-2010 at 12:47 PM.. Reason: Apoligies.
# 6  
Quote:
Originally Posted by methyl
@Scrutinizer and ctsngb
When the O/P comes back with the O/S I predict that it will be AIX or something which cannot deal with long command lines after expansion of "*" in Shell.

Apologies to ctsgnb because our posts crossed.
No prob dude ! Smilie

Solaris also has limitation to wildcard expansion :
Code:
$ uname -a
SunOS <anonymized> 5.9 Generic_122300-54 sun4u sparc SUNW,Sun-Fire-15000
$ ls | wc -l
   68616
$ ls -l *
bash: /usr/bin/ls: Arg list too long
$

# 7  
@ctsgnb & off topic
It would not be beyond the Shell compilers to flag "*" in certain constructs as a Syntax Error. If I had my way an "*" would be a Syntax Error in a "for" command. Just my personal view about open-ended lists. Others may differ.
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