shell awk

#!/bin/bash
# for ((i=1;i<=10000;i++)); 
# do 

# c1=`shuf -i 1-10000 -n 1` #生成随机数
# c2=`shuf -i 1-10000 -n 1`
# c3=`shuf -i 1-10000 -n 1`
# c4=`shuf -i 1-10000 -n 1`
# echo $c1 $c2 $c3 $c4 >>awk_column.txt;
# done
-------上面注释的部分用来生成awk_column.txt

c1=`shuf -i 1-10000 -n 1`
c2=`shuf -i 1-10000 -n 1`

awk ‘BEGIN {} {if ($1 == exclude1 || $1 == exclude2){print NR,$1;}} END {}‘ exclude1=$c1 exclude2=$c2 awk_column.txt

BEGIN {} {pattern } END {}
#BEGIN，END，中间， 3个部分都是可选
#每一个{}都是一个循环体，会对文件中每一行进行迭代

awk -v exclude1=$c1 ‘BEGIN {} {if ($1 == exclude1 ){print NR,$1;}} END {}‘ awk_column.txt

awk ‘BEGIN {} {if ($1 == exclude1 || $1 == exclude2){print NR,$1;}} END {}‘ exclude1=$c1 exclude2=$c2 awk_column.txt

NR：number of records, 行号
NF：number of fields，有几列
$0:执行过程中当前行的内容
$1:执行过程中当前行的第一个字段内容
$2:执行过程中当前行的第二个字段内容
......