42 lines
767 B
Plaintext
42 lines
767 B
Plaintext
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#!/bin/bash
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__DIR__=$(dirname $(realpath $0));
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source $__DIR__/../../lib/include/bash/const;
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source $__DIR__/../../lib/include/bash/func;
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# [1] Check arguments
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#========================================================#
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# (1) If argument missing #
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if [ $# -lt 2 ]; then
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echo 127;
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exit 127;
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fi;
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# (2) Check argument #1 #
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if [ ! -e "$DATA_DIR/$1" ]; then
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echo 127;
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exit 127;
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fi;
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# (3) Check number of lines to truncate #
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if [ $2 -gt $(wc -l "$DATA_DIR/$1" | awk '{print $1}') ]; then
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echo 127;
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exit 127;
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fi;
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# [2] Truncate file
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#========================================================#
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# (1) Increment by 1 (because exlusive) #
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incr=$(expr $2 + 1);
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# (2) Truncate file #
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tail -n +$incr "$DATA_DIR/$1" | tee "$DATA_DIR/$1" > /dev/null;
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echo 0;
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exit 0;
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