#!/bin/bashn=9999for(( i =1; i<=100;i++))do/root/testProgram$nsleep5 n=$((n+1))done REFER:How to increment a variable in bash?
The command((++N))will act as a counter and increment the variable valueNso it can be printed in theechostatement. for loop example Now after running the abovefor loopcommand press the up arrow key from the terminal and you can see the multi-linefor loopis converted to a single line fo...
For example, you can run UNIX command or task 5 times or read and process list of files using a for loop. A for loop can be used at a shell prompt or within a shell script itself. for loop syntax Numeric ranges for syntax is as follows: for VARIABLE in 1 2 3 4 5 .. N do c...
forvariablein1 2 3... ndocommand1 command2done The second notation uses theforloop with a three-expression like in the C programming language.exp1is the initialization,exp2is the condition, andexp3is the increment. for((exp1;exp2;exp3))docommand1 command2done ...
In the following example code, the loop starts by initializingi = 0, and before each iteration, checks ifi ≤ 10. If true, itprintsthe current value ofiand [increments the variable]iby 1 (i++). Otherwise, the loop terminates. for((i=0;i <=1000;i++));doecho"Counter:$i"done ...
The loop structure is incomplete without the increment or decrement. There are various methods to implement increment and decrement in the while loop. Using Round Brackets (( )) UsingletCommand The simplest way to add increment or decrement is using the round brackets with variable-name and ++ ...
Incrementing a variable: In this example, I haveused a while loopwhich will iterate will the value of theithe variable is less or equal to 5: i=1 while [ $i -lt 5 ] do echo i: $i let "i+=1" done And here's the output: ...
forItemin$(Command)doSome Operations on Itemdone When a command is used with theforloop, theItemvariable will be assigned with each of the output tokens one by one. For example, the following script will print all the files or folders starting withfin the current directory using theforloop...
C Style For Loop In Bash We can use for loop in the same manner as the C language. This loop contains three parts:initialization, condition,andincrement. In the first part, a variable is initialed with an initial/start value, then in condition, the end value is specified which means the...
By incrementing a variable each time the loop is executed, the commands can be run a specific number of times: n=1 while [ $n -le 10 ] do echo "$n" n=$(( $n + 1 )) done The true command can be used to create an infinite loop: ...