A list of strings or array or sequence of elements can be iterated by using for loop in bash. How you can iterate the list of strings in Bash by for loop is shown in this tutorial by using various bash script examples. If you are novice is bash programming then you can read the ...
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: $element" Done Over...
就像是: for databaseName in listOfNames then # Do something endarrays bash shell unix 答案你可以像这样使用它: ## declare an array variable declare -a arr=("element1" "element2" "element3") ## now loop through the above array for i in "${arr[@]}" do echo "$i" # or do w...
Loop over strings The example below shows a loop that iterates over a list of strings. The loop operates on each item in the list, and the variable element stores the item that the loop is currently operating on. for element in Hydrogen Helium Lithium Beryllium do echo "Element: $element...
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 $i" done Example #2: Iterate over a List of Strings in for Loop in bashfruit_list=('apple' 'orange' 'kiwi' 'pear' 'watermelon') for ...
Another syntax variation of for loop also exists that is particularly useful if you are working with a list of files (or strings), range of numbers, arrays, output of a command, etc. The list/range syntax for loop takes the following form: ...
This type of for loop is characterized by counting. The range is specified by a beginning (#1) and ending number (#5). The for loop executes a sequence of commands for each member in a list of items. A representative example in BASH is as follows to display welcome message 5 times wit...
(2) creates a potentially very long single line of output” 如何把用换行符“\n”分隔的一个大字符串,分割开,并存放到一个数组中? #!/bin/bash declare OUTPUT=$(sshroot@10.111.111.111isi_for_array isi_flush --dedupe-queue --dedupe-index ) ...
Bash for Loop With Strings In a bash loop, a shell variable’s common usage is to store multiple strings. It is useful for running tasks in bulk, like renaming files or installing a package. Here’s the syntax: variable="string1 string2 string3" for item in $variable do command1 comma...