I have three variables VAR1 file1 VAR2 file2 VAR3 file3 How to use and amp amp operator in if statement like this if -f VAR1 amp amp -f VAR2 amp amp -f VAR3 then fi When I write this code it gives error What is the right way

So to make your expression work changing amp amp for -a will do the trick It is correct like this if -f VAR1 amp amp -f VAR2 amp amp -f VAR3 then or like if -f VAR1 amp amp -f VAR2 amp amp -f VAR3 then or even if -f VAR1 -a -f VAR2 -a -f VAR3 then You can find further details in this question bash Multiple Unary operators in if statement and some references given there like What is the difference between test and

[bash] Using the && operator in an if statement

I have three variables:

VAR1="file1"
VAR2="file2"
VAR3="file3"

How to use and (&&) operator in if statement like this:

if [ -f $VAR1 && -f $VAR2 && -f $VAR3 ]
   then ...
fi

When I write this code it gives error. What is the right way?

This question is related to bash if-statement syntax operators

The answer is

So to make your expression work, changing && for -a will do the trick.

It is correct like this:

 if [ -f $VAR1 ] && [ -f $VAR2 ] && [ -f $VAR3 ]
 then  ....

or like

 if [[ -f $VAR1 && -f $VAR2 && -f $VAR3 ]]
 then  ....

or even

 if [ -f $VAR1 -a -f $VAR2 -a -f $VAR3 ]
 then  ....

You can find further details in this question bash : Multiple Unary operators in if statement and some references given there like What is the difference between test, [ and [[ ?.

Source: Stackoverflow.com

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