Difference between revisions of "Object3D"
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=== linux tips === | === 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 | ||
=== python tips === | === python tips === | ||
Revision as of 21:32, 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
