od xxd

od
xxd
ASCII<=>HEX转换

od - dump files in octal and other formats

xxd是vim-common自带的命令，服务器上一般都已安装过了: yum install vim-common

od

# 生成测试文件
echo abcdef >tmp.txt

# 以16进制显示，跳转1个字节，取3个字节
od -t x -c -j 1 -N 3 tmp.txt 

0000001  62  63  64
          b   c   d
0000004

# -t x1 以16进制显示
# -c 显示ASCII码
# -j 跳过字节数
# -N 读取字节数

xxd

# 字符串转ASCII码16进制字串(将VIN码转换为16进制码)：
echo LVTDB11B0GB012616|xxd -p
4c565444423131423047423031323631360a


# ASCII码16进制还原字符串：
echo LVTDB11B0GB012616|xxd -p|xxd -r -p
LVTDB11B0GB012616

# 日志里面'0x31 0x32 0x33'形式，可用sed先处理后再转换：
echo '0x31 0x32 0x33'|sed -e 's/0x//g' -e 's/ //g'|xxd -r -p
123

# 如果希望转成'0x31 0x32 0x33'的形式，可参数如下的sed(echo -n不会有换行符，否则结尾会多一个0x0a)
echo -n '123'|xxd -p|sed 's/\(..\)/0x\1 /g'
0x31 0x32 0x33

ASCII<=>HEX转换

字符串转换为16进制表示的ASCII串

S="LVTDB11B0GB012616
LH551005XC51
46003616190946
18986031590021159873"

echo "$S"|xargs -I {} sh -c 'echo -n "{} = ";echo {}|xxd -p;'

echo LVTDB11B0GB012616|xxd -p

转换结果

LVTDB11B0GB012616 = 4c565444423131423047423031323631360a
LH551005XC51 = 4c48353531303035584335310a
46003616190946 = 34363030333631363139303934360a
18986031590021159873 = 31383938363033313539303032313135393837330a

ASCII码串还原为字符串

S="4c56544442313142304742303132363136
4c4835353130303558433531
3436303033363136313930393436
3138393836303331353930303231313539383733"

# awk
for s in $S;do echo -n "$s = ";echo $s|sed 's/\(..\)/0x\1\n/g'|xargs -I {} awk 'BEGIN{printf("%c",{})}';echo;done
# xxd
echo "$S"|xargs -I {} sh -c 'echo -n "{} = ";echo {}|xxd -r -p;echo'
# echo -e
echo "$S"|sed 's/\(..\)/\\\\x\1/g'|xargs -I {} sh -c 'echo -e "{}"'

结果

4c56544442313142304742303132363136 = LVTDB11B0GB012616
4c4835353130303558433531 = LH551005XC51
3436303033363136313930393436 = 46003616190946
3138393836303331353930303231313539383733 = 18986031590021159873