[unix]#!

Tue May 13

unix

Author：Noritaka

chmod //change mode
chmod 755 myfile.sh
chmod user-group-others fineName
7: 4+2+1 read 4 + write 2 + execute 1 
6: 4+2+0 read 4 + write 2 + execute 0 

chmod //change mode
chmod 755 myfile.sh
chmod user-group-others fineName
7: 4+2+1 read 4 + write 2 + execute 1 
6
: 4+2+0 read 4 + write 2 + execute 0 
5: 4+0+1 read 4 + write 0 + execute 1 
4: 4+0+0 read 4 + write 0 + execute 0 
0: 0+0+0 read 0 + write 0 + execute 0 

u: user
g: group
o: others
 
+: add
-: delete
=: update

chmod u-x myfile.sh // user can not execute myfile.sh
chmod o=r myfile.xh // others can not read myfile.sh

chmod 755 script.sh
chmod +x script.sh // anyone can execute script.sh
chmod u+x script.sh // user can execute script.sh
chmod -x script.sh //noone can execute script.sh

ls -l script.sh // you can see permision about script.sh