eval 'for val in "${'$arrItem'[@]}";do echo "$val";done' done Output: $ bash for_list7.sh Example-8: Using pattern to read the list of strings Create a new bash file named for_list8.sh with the following code. Here, ‘/, /’ pattern is used to split the string values ...
#!/bin/bash #: Description : print formatted sales report ## Build a long string of equals signs divider=== divider=$divider$divider ## Format strings for printf header="\n %-10s %11s %8s %10s\n" format=" %-10s %11.2f %8d %10.2f\n" ## Width of divider totalwidth=44 ## Pri...
Python 风格 for in(常用)for variable in value_list do statements done value_list直接给出具体的值:1 2 3 4 5,"john" "jack" "tom" 给出一个取值范围(只支持数字和字母):{1..5},{a..f} 使用命令的执行结果:$(ls) 使用Shell 通配符:*.sh 使用特殊变量:$@(如果省略 value_list 的话相当于...
Using for loop to read a list of string values with spaces When a list of a string is read byfor-inloop and any string value contains space then the values split into words based on space if the string value is not quoted with a single or double quotation. The following example shows ...
Over Strings Now let's look at standard Bash for Loop over Strings. For instance, in the below example, the loop will repeat each item in the list of strings and variable element fixed to the current item. for element in Gold Silver Diamond Platinum do echo "Element: $element" Done Over...
COLORS="red green blue"forCOLOR in $COLORSdoecho"The Color is: ${COLOR}"done while 循环,当所给的条件为true时,循环执行while里面的代码块,下面的例子是一行一行读取文件内容。 #!/bin/bashLINE=1whileread CURRENT_LINEdoecho"${LINE}: $CURRENT_LINE"((...
在for循环中省略in [list]部分 10-6. 使用命令替换来产生for循环的[list] 10-7. 对于二进制文件的grep替换 10-8. 列出系统上的所有用户 10-9. 在目录的所有文件中查找源字串 10-10. 列出目录中所有的符号链接 10-11. 将目录中所有符号链接文件的名字保存到一个文件中 10-12. 一个C风格的for循环 10...
The above for loop can of course be re-written easily with a three-expression loop.for (( i=0; i <= 100 ; i=i+5 )); do echo "count $i" done Example #2: Iterate over a List of Strings in for Loop in bashfruit_list=('apple' 'orange' 'kiwi' 'pear' 'watermelon') for ...
Variable names with a dollar sign can also be used inside other strings in order to insert the value of the variable into the string: echo"I went to school in$the_empire_state." ## I went to school in New York. When writing a Bash script, the script gives you a few variables for...
Let’s recall the basic syntax of the for loop, which is common for both Zsh and Bash: for <variable> in <list_of_items>; do ; ... ; ; done Then let’s run a simple example: $ for x in foo bar foobar; do echo $x; done foo bar foobar Note that we separated the elements...