文件操作 - ebtables-save
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文件: /usr/sbin/ebtables-save
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#!/bin/bash EBTABLES="/sbin/ebtables" [ -x "$EBTABLES" ] || exit 1 echo "# Generated by ebtables-save v1.0 on $(date)" cnt="" [ "x$EBTABLES_SAVE_COUNTER" = "xyes" ] && cnt="--Lc" for table_name in $(grep -E '^ebtable_' /proc/modules | cut -f1 -d' ' | sed s/ebtable_//); do table=$($EBTABLES -t $table_name -L $cnt) [ $? -eq 0 ] || { echo "$table"; exit -1; } chain="" rules="" while read line; do [ -z "$line" ] && continue case "$line" in Bridge\ table:\ *) echo "*${line:14}" ;; Bridge\ chain:\ *) chain="${line:14}" chain="${chain%%,*}" policy="${line##*policy: }" echo ":$chain $policy" ;; *) if [ "$cnt" = "--Lc" ]; then line=${line/, pcnt \=/ -c} line=${line/-- bcnt \=/} fi rules="$rules-A $chain $line\n" ;; esac done <<EOF $table EOF echo -e $rules done
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