Difference between revisions of "Object3D"
From CSWiki
(→linux tips) |
(→linux tips) |
||
| Line 2: | Line 2: | ||
* Changing Default permissions when creating a new directory | * Changing Default permissions when creating a new directory | ||
umask u=rwx,g=rwx,o= | umask u=rwx,g=rwx,o= | ||
| − | |||
* Set default group | * Set default group | ||
newgrp groupname | newgrp groupname | ||
| Line 11: | Line 10: | ||
exit | exit | ||
fi | fi | ||
| − | |||
| − | |||
* Change default shell | * Change default shell | ||
chsh -s /bin/bash haosu | chsh -s /bin/bash haosu | ||
| − | |||
* I/O Redirection | * I/O Redirection | ||
if you want to redirect both standard out and standard error, you can use: 1>out 2>&1, where out is a filename, 1 stands for STDOUT, and 2 for STDERR | if you want to redirect both standard out and standard error, you can use: 1>out 2>&1, where out is a filename, 1 stands for STDOUT, and 2 for STDERR | ||
Revision as of 21:34, 31 December 2008
linux tips
- Changing Default permissions when creating a new directory
umask u=rwx,g=rwx,o=
- Set default group
newgrp groupname
Remark: this command will start a nested shell. If you want to use the command in a startup script like in .bashrc, to avoid infinite loop, you should put it in an "if" expression like this: if [ `id -gn` != "object3d" ] then newgrp object3d exit fi
- Change default shell
chsh -s /bin/bash haosu
- I/O Redirection
if you want to redirect both standard out and standard error, you can use: 1>out 2>&1, where out is a filename, 1 stands for STDOUT, and 2 for STDERR
