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Avoiding Tar's (or Any Other Commandline's) Argument List Too Long Error

When you try to tar a large number of files (cp, mv, or anything else) you may hit the limit of ARG_MAX. You can overcome this by generating a list of files then feeding it to tar as follows:

# generate the file list
find -iname '*.ext' > fileList.txt

#run tar passing it the file list
tar czvf archive.tar.gz --files-from fileList.txt

# a shorthand of this would be:
find . -name '*.ext' -print | tar -cvzf archive.tar.gz --files-from -

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