显示文件oldboy.txt的第20行到30行请问如何做?
echo stu{00..40}|xargs -n1 >oldboy.txt
1. head -30 oldboy.txt|tail -112. sed -n '20,30p' oldboy.txt3. sed -n '20,30!d' oldboy.txt4. awk 'NR==20,NR==30' oldboy.txt5. awk 'NR>=20 && NR<=30' oldboy.txt6. grep -n "" oldboy.txt |grep -A 10 "^20:" 7. grep -n "" oldboy.txt |grep -B 10 "^30:" 8. grep -n "" oldboy.txt |grep -C 5 "^25:"
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