32 lines
435 B
Bash
32 lines
435 B
Bash
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#!/bin/sh
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BZIP=/usr/local/bin/bzip2
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RM="rm -f"
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MV="mv -f"
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if [ $# -ne 2 ]
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then echo "Usage: $0 <log> <keep>"
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exit 1
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fi
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if [ ! -f "$1" ]
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then exit 1
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fi
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if [ ! -x "$BZIP" ]
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then exit 1
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fi
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if [ "$2" -le 0 ]
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then echo "Keep at least 1 copy please."
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exit 1
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fi
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k="$2"
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$RM "$1.$k" 2>/dev/null || exit 1
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while [ "$k" -ge 2 ]
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do prev="`expr $k - 1`"
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$MV $1.$prev.bz2 $1.$k.bz2 2>/dev/null
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k=$prev
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done
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$BZIP -c $1 >$1.1.bz2 && : >$1
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