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  • What is the meaning of chmod -R a-x,a=rX,u+w?
    rw-r--r-- rwxr-xr-x If we leave out the a-x step, one of the executable’s x bits would be set (otherwise it wouldn’t be an executable), and the a=rX step would handle it like a directory
  • chmod - How to get permission number by string : -rw-r--r-- - Unix . . .
    What do you mean by “set the same”? Do you already have a file with -rw-r--r-- permission and want to set another file with the same permissions? Then see if your chmod supports --reference: “--reference=RFILE use RFILE's mode instead of MODE values” – man chmod –
  • SSH Key Permissions chmod settings? - Unix Linux Stack Exchange
    Also your ssh directory itself must be writable only by you: chmod 700 ~ ssh or chmod u=rwx,go= ~ ssh You of course need to be able to read it and access files in it (execute permission) It isn't directly harmful if others can read it, but it isn't useful either
  • The difference between -r and -R - Unix Linux Stack Exchange
    -R, --dereference-recursive Read all files under each directory, recursively Follow all symbolic links, unlike -r chmod has no -r option so, presumably, the devs prefer -R However, of course, -r is a valid permissions string (as pointed out by @Arkadiusz Drabczykso) so it can't really be used there
  • Whats the difference between `chmod a+x` and `chmod +x`?
    (FelixJN) man chmod | cat -A does not show anything man detects if the output is a terminal and, if not, discards the formatting Use MAN_KEEP_FORMATTING=y man chmod to force formatting You can pipe it to your editor where searching is more confortable For example, in Vim, MAN_KEEP_FORMATTING=y man chmod | vim - u\bug\bgo\bo Further reading
  • How to recover from a chmod -R 000 bin? - Unix Linux Stack Exchange
    sudo perl -e 'chmod 0755, " bin", " bin chmod" Beware when restoring permissions that some files in bin like mount or su are meant to have permissions other than 0755 If you've rebooted, however, you might not be able to get to the point where you can run perl or ld so though
  • linux - chmod: changing permissions of directory Operation not . . .
    Since you've broken a tree of directory permissions with chmod -R you need to fix them all up Run this from the directory above dir: find dir -type d -exec chmod u=rwx,go=rx {} + find dir \! -type d -exec chmod u=rw,go=r {} + In case you're wondering, you need the x permission to access a directory You need rx to be able to read it
  • Difference between chmod 775 and chmod 2755 - linux
    chmod 2775 var www The 2 in front of 775 causes the group who is the owner of var www to be copied to all new files folders created in that directory There are also other options then 2:
  • Is `chmod -R ugo+rwx ` less dangerous than `chmod -R 777
    I read here that chmod -R 777 is a very bad idea, because it overwrites permissions on files and deactivates the setuid, setgid, and sticky bits However I was thinking that chmod -R ugo+rwx would not overwrite the permissions but add them, if not there already present, and that it would be therefore much safer than the aforementioned
  • How can I revert a chmod on the etc directory? - linux
    One thing went wrong: the use of sudo with that command The -R switch tells chmod to recursively set the permissions to that directory, which is, in every case, a non-recommended action (should we call it: heresy) if you don't know what are you doing (once this happened to me, I didn't issue the command but a faulty GUI made it, and my system went wire)





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