Linux (zip): how to find all files that are not readable?

Question

I just tried to zip folder and it's content by this command:

zip -r ./mytarget.zip ./mysource

At the end I got the warning:

zip warning: Not all files were readable
files/entries read:  141595 (4.2G bytes)  skipped:  57 (1.8M bytes)

I'd like to know which files were skipped.

How can I find all the files that were not readable? I don't have sudo rights on that server.

Thanks in advance!

Cork

Stack Overflow is a site for programming and development questions. This question appears to be off-topic because it is not about programming or development. See What topics can I ask about here in the Help Center. Perhaps Super User or Unix & Linux Stack Exchange would be a better place to ask. – Jedediah

@Jedediah It's part of a script, so kind of in the middle of Stackoverflow and Super User. – Cork

Answer 1

you can use

find . ! -readable

to recursively scan for unreadable files or directories. This command takes into account permissions, but also broken links.

Fionnula

Thanks, but it didn't show any files. The files were probably blocked by something else, because the zipping was successfully a few tries later. – Cork

Answer 2

I experienced the same as you, and find . ! -readable didn't help.

I solved it by logging all output from the zip command to a file:

 zip -r my-archive.zip /path/to/dir/ &>> zip-log

and then searching in it for the warning word, which did not only occured at the end of the command's output, as a summary, but also just after each of the files causing trouble (2 in my case):

  adding: home/myuser/.cagefs/tmp/mysql.sock
    zip warning: could not open for reading: home/myuser/.cagefs/tmp/mysql.sock
  adding: home/myuser/.cagefs/tmp/lshttpd/ (stored 0%)
  adding: home/myuser/.cagefs/tmp/.s.PGSQL.5432
    zip warning: could not open for reading: home/myuser/.cagefs/tmp/.s.PGSQL.5432

Osculum

Answer 3

I fix this by updating the zip package and clear all the cache, here is the step :

• delete the previous zip (which failed)
• sudo apt-get update
• sudo apt-get upgrade
• clear & purge all the cache from web dashboard and cloudflare
• reboot the server
• try zip these files

Anew