Users must note that the ‘*’ is used to read files in the ‘for loop.’ The functioning of the loop is the simple manner by reading each file or folder through the step of the directory and prints with the ou
Line 1starts theforloop at zero, increments by one, and ends at two, inclusive. Line 3starts the nestedforloop at zero. The value increments by one and ends at nine inclusively. Line 5prints the values from theforloops. The nested for loops through all numbers three times, once for eac...
Bash For Loop In One Line with Files # for i in *; do echo "Found the following file: $i"; done # for i in `cat filelist.txt`; do echo ${i}; done; if a line may include spaces better use a while loop: # cat filelist.txt | while read LINE; do echo "${LINE}"; done ...
bash for循环是如何使用的 10 Bash for Loop In One Line Examples Bash For Loop Examples In Linux What Is Bash in Linux?...Bash for Loop In one Line with items # for i in 1 2 3 4 5 ; do echo "$i" ; done # for i in {1..5} ; do...$i" ; done # for planet in Mercury...
Three-expression bash for loops syntax This type of for loop share a common heritage with the C programming language. It is characterized by a three-parameter loop control expression; consisting of an initializer (EXP1), a loop-test or condition (EXP2), and a counting expression (EXP3). ...
line done 使用while循环 while read -r line do echo $line done < filename While循环中read命令从标准输入中读取一行,并将内容保存到变量...line中。...在这里,-r选项保证读入的内容是原始的内容,意味着反斜杠转义的行为不会发生。输入重定向...
for((exp1;exp2;exp3))docommand1 command2done Examples Using theforLoop in Bash The scripts below demonstrate using the for loop in Bash scripts. This script sets the value of the variableito1the first time, and it printsline number 1. Then it goes back to theforloop, sets variableito...
Adding a for loop to a Bash script Running for loops directly on the command line is great and saves you a considerable amount of time for some tasks. In addition, you can include for loops as part of your Bash scripts for increased power, readability, and flexibility. For example, you ...
Let’s create a 3×3 2D array using nested while loop in Bash: #!/bin/bash i=1 while [ $i -le 3 ] do j=1 while [ $j -le 3 ] do echo "Row: $i Column: $j" ((j++)) done ((i++)) done Reading File Line by Line with Bash while Loop ...
echo "endless loop" done 等价于 #!/bin/bash while true do echo "endless loop" done 可以在 if/then 中作占位符: #!/bin/bash condition=5 if [ $condition -gt 0 ] #gt表示greater than,也就是大于,同样有-lt(小于),-eq(等于) then : # 什么都不做,退出分支 ...