标签:ast 指定 数字排序 end col 求和 inux roo grep
查空行 awk ‘/^$/{print NR}‘ demo1.txt 求某一列的和 awk ‘{sum+=$2} END {print "求和:"sum}‘ demo2.txt 数字排序 sort -n -t ‘ ‘ -k 2 demo3.txt sort -t ‘ ‘ -k 2nr demo3.txt 搜索指定目录下文件内容 grep -r ‘666‘ /root/ | cut -d ‘:‘ -f 1 | sort -u 筛选出单词长度大于3的单词 echo "I may not be able to change the past, but I can learn from it." | awk -F "[ ,.]" ‘{for(i=1;i<=NF;i++){if(length($i)>3){print $i}}}‘ 单词频次统计及排序 awk -F "[ ,.]" ‘{for(i=1;i<=NF;i++){s[$i]++}} END {for(key in s){print key, s[key]}}‘ demo5.txt | sort -k 2nr | head
标签:ast 指定 数字排序 end col 求和 inux roo grep
原文地址:https://www.cnblogs.com/jingsupo/p/14813892.html