今天小編就爲大家分享一篇基於Shell中for循環的幾個常用寫法分享,具有很好的參考價值,希望對大家有所幫助。一起跟隨小編過來看看吧
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
以上這篇基於Shell中for循環的幾個常用寫法分享就是小編分享給大家的全部內容了,希望能給大家一個參考,也希望大家多多支持神馬文庫。