在二进制文件中找出可打印字符增强版

#!/bin/bash
ARGS=1
E_BAD_ARGS=65
E_NO_FILE=66
if [ $# -ne $ARGS ]
then
        echo "Usage:`basename $0` filename"
        exit $E_BAD_ARGS
fi


if [ ! -f $1 ]
then
        echo "File \"$1\" does not exist"
        exit $E_NO_FILE
fi

MINSTRLEN=3
WORDFILE=/usr/share/dict/linux.words

wlist=`strings "$1" | tr A-Z a-z | tr '[:space:]' Z | \
tr -cs '[:alpha:]' Z | tr -s '\173-\377' Z | tr Z ' '`

for word in $wlist
do
        strlen=${#word}
        if [ "$strlen" -lt "$MINSTRLEN" ]
        then
                continue
        fi
        grep -Fw $word  "$WORDFILE"
done


exit $?

使用方法：

./wstring.sh  "a.bat"

输出：

1.png