第一類:數字性循環
- for1-1.sh
#!/bin/bash
for((i=1;i<=10;i++));
do
echo $(expr $i \* 3 + 1);
done
- for1-2.sh
#!/bin/bash
for i in $(seq 1 10)
do
echo $(expr $i \* 3 + 1);
done
- for1-3.sh
#!/bin/bash
for i in {1..10}
do
echo $(expr $i \* 3 + 1);
done
- for1-4.sh
#!/bin/bash
awk 'BEGIN{for(i=1; i<=10; i++) print i}'
第二類:字符性循環
- for2-1.sh
#!/bin/bash
for i in `ls`;
do
echo $i is file name\! ;
done
- for2-2.sh
#!/bin/bash
for i in $* ;
do
echo $i is input chart\! ;
done
- for2-3.sh
#!/bin/bash
for i in f1 f2 f3 ;
do
echo $i is appoint ;
done
- for2-4.sh
#!/bin/bash
list="rootfs usr data data2"
for i in $list;
do
echo $i is appoint ;
done
第三類:路徑查找
- for3-1.sh
#!/bin/bash
for file in /proc/*;
do
echo $file is file path \! ;
done
- for3-2.sh
#!/bin/bash
for file in $(ls *.sh)
do
echo $file is file path \! ;
done
總結:
現在一般都使用for in結構,for in結構後面可以使用函數來構造範圍,比如$()、``這些,裏面寫一些查找的語法,比如ls test*,那麼遍歷之後就是輸出文件名了。