Re: How to check a file's modify time is at epoch 0?

[Eli Schwartz]

On 10/27/19 7:29 PM, Peng Yu wrote:
> Thanks. But I am looking for something native to bash. Involvement
> with external programs will slow down the run time.

No, there is no bash builtin that lets you stat the filesize directly.

I was going to say, assuming your distribution of bash included the
built contents of examples/loadables/, you could use the example
loadable 'finfo'. However,

$ enable -f /usr/lib/bash/finfo finfo
-bash: enable: cannot open shared object /usr/lib/bash/finfo:
/usr/lib/bash/finfo: undefined symbol: minor

Other loadables provided in my Arch Linux package work fine, just this
one does not.

Chet -- when I try to compile finfo.c, I get this warning:

finfo.c: In function ‘printst’:
finfo.c:277:7: warning: implicit declaration of function ‘major’
[-Wimplicit-function-declaration]
  277 |  ma = major (st->st_rdev);
      |       ^~~~~
finfo.c:278:7: warning: implicit declaration of function ‘minor’
[-Wimplicit-function-declaration]
  278 |  mi = minor (st->st_rdev);
      |       ^~~~~

If I add an #include <sys/sysmacros.h> then it compiles okay and I can
load it and it works as expected.

-- 
Eli Schwartz
Arch Linux Bug Wrangler and Trusted User

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