#! /bin/bash

# For loop:

#Syntax 1:

# for VARIABLE in 1 2 3 4 5 ... n

# do

# command1

# command2

# command3

# done

#Example

for i in 1 2 3 4 5

do

echo $i

done

# it will print (1 2 3 4 5)

echo "................................................"

for i in {1..10} # for runing loop in range

do

echo $i

done

echo "................................................"

for i in {1..10..2} # 1 is starting point, 10 is ending point and after 2nd two dot 2 is for incrementing starting point

do #start..end..increment

echo $i

done

echo "................................................"

#Syntax 2: can use files as inputs also

# for VARIABLE in file1 file2 file3

# do

# command1 on $VARIABLE

# command2

# command3

# done

# #Syntax 3: can use commands as input also

# for OUTPUT in $(Linux-Or-Unix-Command-Here)

# do

# command1 on $OUTPUT

# command2 on $OUTPUT

# commandN

# done

#Syntax 4: (Similar to C/C++ programming)

# for (( EXP1; EXP2; EXP3 ))

# do

# command1

# command2

# command3

# done

#Example

for (( i=0; i<5; i++ ))

do

echo $i

done