shell循环语句

逐行读文本

i=1while read a; doif [ $a = '1' ]; thenecho "line $i equals 1 : $a"elseecho "line $i doesn't equals 1 : $a"fii=$(($i+1))done <a.txt

文本内容

 

1bcd1efgh1d

 

line=1cat test.txt | while read a b c d e;doecho "line $line: a:$a, b:$b, c:$c, d:$d, e:$e"line=$(($line+1))done