Can I write a file with only read permission?
4608
Why can I modify a read-only file?
21563
How to change permissions for a folder and its subfolders/files in one step?
72314
File permissions and saving
36874
Directory permissions vs file permssions
90733
Write to a file without redirection?
1278
All folders are Read-Only (Windows)
127738
Can root/superuser read my read-protected files?
134017
Grant an app write access to external storage that does not request it?
122568
Can I read and write to the same file in Linux without overwriting it?
132662
Minimum file permissions to rename file
143846
How can I find all files I do not have write access to in specific folder?
2225
Why can't I delete a file even though I have write permissions?
105266
Samba: Write access rights without read access rights possible?
73661
File permissions won't change
10991
Still able to read file after changing permissions
96649
Understanding file permissions
125491
Chmod to allow read and write permissions for directory