Kali Linux - file, folder access management
permission on a file on a folder/directory
r (read) read file content (cat) read directory content (ls)
w (write) change file content (vi/touch) create file in directory (vi/touch)
x (execute) execute the file (script/program) enter the directory (cd)
binary octal permissions
000 0 ---
001 1 --x
010 2 -w-
011 3 -wx
100 4 r--
101 5 r-x
110 6 rw-
111 7 rwx
777 = rwxrwxrwx
666 = rw-rw-rw-
555 = r-xr-xr-x
444 = r--r--r--
333 = -wx-wx-wx
222 = -w--w--w-
111 = --x--x--x
000 = ---------
chmod [permission] [filename]
chmod 777 tor-browser-linux64-12.0.4_ALL.tar.xz
chmod u+x 001.sh permission granted to execute added to user
chmod a+x 001.sh permission granted to execute added to All (user, group, others)
chmod g-x 001.sh permission to execute is revoked from the group
chmod u-w 001.sh permission to write os revoked from the user
chmod a+x 001.sh
or
chmod +x 001.sh execute permission given for all the groups
u - user g - group o - other a = all
chmod u=wx file permission granted for user with write and execute
chmod g=rw file permission granted for group with read and write
chmod u=rwx.g=rw,o=r file permission granted for user, group and other with different access
chmod 777 *.sh permission granted group of files
chmod u=rwx.g=rw,o=r *.txt permission granted group of files
cp -p file1 file2 copy file permision and apply to other files
mkdir -m 777 dirname assign file access permission while creating directory/folder
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