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#1 2022-08-09 19:34:23

JaydenDev
Member
Registered: 2022-07-11
Posts: 123

I'm writing a simple program to run a script within a chroot however:

The following if statement checks if the file exists!

# script checks
if [[ -d $1 ]]
then
    echo "Script $1 exists!"
else
    echo "Script $1 does not exist!"
fi

However, regardless if the file exists. It says it exists, no matter what. I've always found variable and file checks in if statements to rarely work.


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Intel Core i5-2400 Nvidia GTX 1050ti Logitech G402 Hyperion Fury (Mouse) BestBuy Essentials USB Keyboard
Software Specifications:
Desktop Environment: KDE Plasma Window Manager: KWin Operating System: Arch Linux (btw)

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#2 2022-08-09 19:46:40

Trilby
Inspector Parrot
Registered: 2011-11-29
Posts: 27,272
Website

Re: I'm writing a simple program to run a script within a chroot however:

First -d tests whether the file exists and is a directory; is that what you really want?

Second, I'd wager properly quoting around $1 will solve your perceived problem.  To see why run the following:

if [[ -d ]]; then
   echo first
fi
if [[ -d "" ]]; then
   echo second
fi

"UNIX is simple and coherent..." - Dennis Ritchie, "GNU's Not UNIX" -  Richard Stallman

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