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本帖最后由 bikkuri 于 2023-04-24 08:29 编辑
- [root@linux:/tmp]# cat a.sh
- #!/bin/bash
- uuid=$(ls -l /dev/disk/by-uuid 2>/dev/null|grep -oPm1 '(?<=[[:xdigit:]]{8}(-[[:xdigit:]]{4}){3}-)[[:xdigit:]]{12}'|sed -r 's/.{2}/&:/g;s/.$//')
- mac=$(ifconfig $(/sbin/route -n|awk '{if($1=="0.0.0.0")print$NF}') 2>/dev/null|grep -oEm1 '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}')
- awk -v _l1ll11=$uuid -v _ll11ll=$mac 'function _11ll11(_11l111,_111lll,_l1llll,_ll1l1l,_1111ll,_l1l111,_llllll){if(_11l111 ~ /^0[0-7]*$/){_ll1l1l=length(_11l111);_111lll=0;for(_1111ll=1;_1111ll<=_ll1l1l;_1111ll++){_llllll=substr(_11l111,_1111ll,1);if((_l1l111=index("01234567",_llllll))>0)_l1l111--;_111lll=_111lll*8+_l1l111}}else if(_11l111 ~ /^0[xX][[:xdigit:]]+/){_11l111=substr(_11l111,3);_ll1l1l=length(_11l111);_111lll=0;for(_1111ll=1;_1111ll<=_ll1l1l;_1111ll++){_llllll=substr(_11l111,_1111ll,1);_llllll=tolower(_llllll);if((_l1l111=index("0123456789",_llllll))>0)_l1l111--;else if((_l1l111=index("abcdef",_llllll))>0) _l1l111+=9;_111lll=_111lll*16+_l1l111}}else if(_11l111 ~ /^[-+]?([0-9]+([.][0-9]*([Ee][0-9]+)?)?|([.][0-9]+([Ee][-+]?[0-9]+)?))$/){_111lll=_11l111+0}else _111lll="NOT-A-NUMBER";return _111lll}BEGIN{_1l11ll=_l1ll11;split(_l1ll11,_l11lll,":");split(_ll11ll,_l111l1,":");for(_111l1l=length(_l11lll);_111l1l>0;_111l1l--){_l11111=_11ll11(sprintf("%s%s","0x",_l11lll[_111l1l]));_l1111l=_11ll11(sprintf("%s%s","0x",_l111l1[_111l1l]));if(_l11111>_l1111l){_1l11ll=_l1ll11;break}else if(_l11111<_l1111l){_1l11ll=_ll11ll;break}}print _1l11ll}'
- [root@linux:/tmp]#
- [root@linux:/tmp]# cat a.sh|awk -v o="5S" '{split(o,f,"");split($0,a,/_[1l]+/); i=0; while(match($0,/_[1l]+/)){i++;b[i]=substr($0,RSTART,RLENGTH); gsub("1",f[1],b[i]);gsub("l",f[2],b[i]);c[i]=a[i]b[i];$0=substr($0,RSTART+RLENGTH)};for(j=1;j<i+1;j++)printf("%s", c[j]);print $0}'> b.sh
- [root@linux:/tmp]#
- [root@linux:/tmp]# cat b.sh
- #!/bin/bash
- uuid=$(ls -l /dev/disk/by-uuid 2>/dev/null|grep -oPm1 '(?<=[[:xdigit:]]{8}(-[[:xdigit:]]{4}){3}-)[[:xdigit:]]{12}'|sed -r 's/.{2}/&:/g;s/.$//')
- mac=$(ifconfig $(/sbin/route -n|awk '{if($1=="0.0.0.0")print$NF}') 2>/dev/null|grep -oEm1 '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}')
- awk -v _S5SS55=$uuid -v _SS55SS=$mac 'function _55SS55(_55S555,_555SSS,_S5SSSS,_SS5S5S,_5555SS,_S5S555,_SSSSSS){if(_55S555 ~ /^0[0-7]*$/){_SS5S5S=length(_55S555);_555SSS=0;for(_5555SS=1;_5555SS<=_SS5S5S;_5555SS++){_SSSSSS=substr(_55S555,_5555SS,1);if((_S5S555=index("01234567",_SSSSSS))>0)_S5S555--;_555SSS=_555SSS*8+_S5S555}}else if(_55S555 ~ /^0[xX][[:xdigit:]]+/){_55S555=substr(_55S555,3);_SS5S5S=length(_55S555);_555SSS=0;for(_5555SS=1;_5555SS<=_SS5S5S;_5555SS++){_SSSSSS=substr(_55S555,_5555SS,1);_SSSSSS=tolower(_SSSSSS);if((_S5S555=index("0123456789",_SSSSSS))>0)_S5S555--;else if((_S5S555=index("abcdef",_SSSSSS))>0) _S5S555+=9;_555SSS=_555SSS*16+_S5S555}}else if(_55S555 ~ /^[-+]?([0-9]+([.][0-9]*([Ee][0-9]+)?)?|([.][0-9]+([Ee][-+]?[0-9]+)?))$/){_555SSS=_55S555+0}else _555SSS="NOT-A-NUMBER";return _555SSS}BEGIN{_5S55SS=_S5SS55;split(_S5SS55,_S55SSS,":");split(_SS55SS,_S555S5,":");for(_555S5S=length(_S55SSS);_555S5S>0;_555S5S--){_S55555=_55SS55(sprintf("%s%s","0x",_S55SSS[_555S5S]));_S5555S=_55SS55(sprintf("%s%s","0x",_S555S5[_555S5S]));if(_S55555>_S5555S){_5S55SS=_S5SS55;break}else if(_S55555<_S5555S){_5S55SS=_SS55SS;break}}print _5S55SS}'
- [root@linux:/tmp]#
- [root@linux:/tmp]# ./a.sh
- 00:10:18:B1:FA:EF
- [root@linux:/tmp]#
- [root@linux:/tmp]# ./b.sh
- 00:10:18:B1:FA:EF
- [root@linux:/tmp]#
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