Help with cat long list of file

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# 1  
Old 08-25-2011
Help with cat long list of file

I have long list of input file's content that I plan to "cat" all of the content into another output file.
The total input file is around 20,000 which all named with ".txt"
Below is the command that I try:
cat *.txt > all_file.out
-bash: /usr/bin/sudo: Cannot allocate memory

Unfortunately, it shown the above error message.
can I know how to solve it out?
Many thanks for advice.
# 2  
Old 08-25-2011
for filename in *.txt
    cat $filename >> all_file.out

This User Gave Thanks to itkamaraj For This Post:
# 3  
Old 08-25-2011
echo *.txt | xargs cat >OUTPUTFILE

or (if filenames contain spaces):
find . -name '*.txt' | xargs cat

This User Gave Thanks to yazu For This Post:
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