从上面的例子可以看出loop将花括号内的值增加 2 个值。 Bash For 数组循环 你还可以使用For Loop. 在下面的示例中,for loop遍历内部的所有值fruits array并将它们打印到标准输出。 #!/bin/bashfruits=("blueberry""peach""mango""pineapple""papaya")fornin${fruits[@]};doecho$ndone 1. 2. 3. 4. 5...
“ for循环”是bash编程语言的语句,它允许重复执行代码。 for循环被归类为迭代语句,即bash脚本中进程的重复。 例如,您可以运行UNIX命令或任务5次,或使用for循环读取和处理文件列表。 可以在shell提示符下或在shell脚本本身内使用for循环。 for循环语法 数字范围的语法如下: for VARIABLE in 1 2 3 4 5 .. N do...
1、 for((i=1;i<=10;i++));do echo $(expr $i \* 4);done 2、在shell中常用的是 for i in $(seq 10) 3、for i in `ls` 4、for i in ${arr[@]} 5、for i in $* ; do 6、for File in /proc/sys/net/ipv4/conf/*/accept_redirects; do 7、for i in f1 f2 f3 ;do 8、f...
There might be other ways to get this done, but remember, this is just an example of things youcando with aforloop. What if you have a mountain of files named something likeFILE002.txt, and you want to replaceFILEwith something likeTEXT. Remember that in addition to Bash itself, you ...
Latest bash version 3.0+ has inbuilt support for setting up ranges: 代码语言:txt AI代码解释 #!/bin/bash for i in {1..5} do echo "Welcome $i times" done This is from Bash For Loop Examples In Linux Bash v4.0+ has inbuilt support for setting up a step value using {START..END.....
So, let’s use aforloop to iterate over the original array in reverse order and add each element to thereversed_numbersarray: #!/bin/bash # Initialize the original array numbers_array=(1 2 3 4) # Create a new array to hold the reversed elements reversed_numbers=() # Get the length...
For example, network interfaces don’t have device files. It is theoretically possible to interact with a network interface using a single character device, but because it would be exceptionally difficult, the kernel uses other I/O interfaces 注意 并非所有设备都有设备文件,因为块设备和字符设备的I...
我正试图根据表在loop.Table的shell脚本中放入两个变量,如下所示: 我当前使用的代码: for i in 16 19 65 77; do sh cacul.aft.sh --aftfile /path/folder/aft${i} --red-file cla164.input --out /path/folder/re/cla164.aft${i} done ...
值并发生重复赋值时,bash会覆盖该键。这 允许我们有效地删除数组重复。 CAVEAT:需要bash4+ 示例功能: remove_array_dups() { # Usage: remove_array_dups "array" declare -A tmp_array for i in "$@"; do [[ $i ]] && IFS=" " tmp_array["${i:- }"]=1 ...
read -a arrayname把单词清单读入arrayname的数组里。 read -p prompt打印提示,等待输入,并将输入存储在REPLY中。 read -r line允许输入包含反斜杠。 见下面的示例(绿色高亮部分的文本为控制台手工输入信息): /> read answer#等待读取输入,直到回车后表示输入完毕,并将输入赋值给变量answer ...