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Top Forums UNIX for Beginners Questions & Answers Setting write permission for particular user Post 303004602 by rbatte1 on Thursday 5th of October 2017 06:25:54 AM
Old 10-05-2017
For ftpuser1 to create, delete or replace a file, it will need write access to the directory. Even if you have no permissions on the file you can then remove the file and create your own unless the directory has the sticky bit set. Can you do ls -ld /path/to/directory and have a look at the permissions? There are the usual bits for user, group & other but if the last bit it s t then the sticky bit is set. In this case, you can only remove your own files. Mainly used in /tmp so you don't dispose of other peoples' temporary files, it can have uses elsewhere too.

Can you paste the output into the thread?


Regards,
Robin
 

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CHMOD(1)						      General Commands Manual							  CHMOD(1)

NAME
chmod - change mode SYNOPSIS
chmod mode file ... DESCRIPTION
The mode of each named file is changed according to mode, which may be an octal number or a symbolic change to the existing mode. A mode is an octal number constructed from the OR of the following modes. 0400 read by owner 0200 write by owner 0100 execute (search in directory) by owner 0070 read, write, execute (search) by group 0007 read, write, execute (search) by others A symbolic mode has the form: [who] op permission The who part is a combination of the letters u (for user's permissions), g (group) and o (other). The letter a stands for ugo. If who is omitted, the default is a. Op can be + to add permission to the file's mode, - to take away permission, and = to assign permission absolutely (all other bits will be reset). Permission is any combination of the letters r (read), w (write), x (execute), a (append only), and l (exclusive access). Only the owner of a file or the group leader of its group may change the file's mode. SOURCE
/sys/src/cmd/chmod.c SEE ALSO
ls(1), stat(2), stat(5) CHMOD(1)
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