27 lines
415 B
Bash
Executable File
27 lines
415 B
Bash
Executable File
#!/bin/sh
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IMG=$1
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if ! [ $# -eq 1 ]; then
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echo "usage $0 <img_file_name>"
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exit 1
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fi
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if ! [ -f $IMG ]; then
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echo $IMG does not exist
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exit 1
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fi
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ls -als $IMG
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mount -o loop,offset=$((63*512)) $IMG mnt || exit 1
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INSTALLDIR=`pwd`/mnt/
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yum clean packages --installroot=$INSTALLDIR
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dd if=/dev/zero of=mnt/fillme bs=1M
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sync
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rm mnt/fillme
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umount mnt
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cp --sparse=always $IMG $IMG.new
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mv $IMG.new $IMG
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ls -als $IMG
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