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script to fill up disk space for testing purpose

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# 8  
Old 10-15-2009
#create empty file of 1000Mb

dd if=/dev/zero of=/tmp/data bs=1024k count=1000
# 9  
Old 10-15-2009
a test script to fill up a disk partition /tmp/data

Please post your actual requirement in the future. Please make it clear whether you are a root user (who can fill a disc).
# 10  
Old 10-15-2009
dd if=/dev/zero of=100M.fs bs=1M count=100
mke2fs 100M.fs
mount -o loop 100M.fs /tmp/data #run with root id or sudo

# 11  
Old 10-16-2009
Fill'er up

Here's how to get /tmp 85% full; change the value if you like:
$ amt=$(df --total /tmp | awk '/^total/ { printf "%d\n", (($2 * 1024) * 0.85); exit}')
$ dd if=/dev/zero of=/tmp/filler bs=${amt} count=1

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