In order to make Gambas3 access a file, should I "chmod 600 filename" (-rw——-) every time I write a program, or is the default "chmod 644 filename" (-rw-r–r–) ok?

Is there another chmod used as default for Gambas3 programs?

 The default should be OK.

But, how are you trying to access the file? Beware of relative paths and what they mean.

b

For ease of compiling, I always place the necessary files in a subdirectory (say "/archives") of my project; and usually insert this part of code, after defining the file path:


During my initial trials of Gambas3, for some reasons mode 644 did not provide access. Instead, mode 600 worked very well.

gambas has commands
Access() /lang/access - Gambas Documentation
and Chmod.. /lang/chmod - Gambas Documentation
and Stat() /lang/stat - Gambas Documentation

Or

changing a file permission from -rw-r–r– to -rw——- should really not ,make a difference and may give you access problems elsewhere.

the order is Owner/Group/Others so you are removing the read flag from the Group and Other users just leaving Owner.  I can't see how that fixes your read issue.

I'd say you found an oddity as it is definitely NOT the case you have to change mode of every file you want to access.

I'd say you found an oddity

Maybe that's the case. Because at home I program on a standalone computer, but at school I program / experiment on a working LTSP server. (Both with Linux Mint, versions 22.1 and 21.3 respectively.)