awk

mswsg

python

1. a = [line.strip() for line in open('a.txt', 'r').readlines()]
   
2. b = [line.strip() for line in open('b.txt', 'r').readlines()]
   
3. 
   
4. for i in b:
   
5.     j = a.index(i)
   
6.     print('\n'.join([a[j], a[j + 1], a[j + 2], a[j + 3]]))

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sunzhiguolu

1. perl -00 -ne 'if(@ARGV){@a=sort(split);next}foreach $k (@a){print m/$k\n(?:\N+\n){3}/g}' b a

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11a
ghj
dfghj
gh
54c
uui
uio
hj

sunzhiguolu

另外, 請(qǐng)教各位大神 處理這個(gè)問(wèn)題的關(guān)鍵在哪里啊. 請(qǐng)大家指點(diǎn), 謝謝大家...

lll1985911

sed -r -n "/^(`cat list.txt | tr '\n' '|'`)$/,+3p" a.txt

toddhai

1. awk 'NR==FNR{a[NR]=$0;next}{for(i=NR-1;i>0;i--)if($1==a[i]){p=1;print $0;next}if(p++<4){print $0;next}}' b.txt a.txt

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