The following table enumerates the available resource limits on a typical Linux system (alphabetically ordered by the ulimit option switch column):
| Resource limit | ulimit option switch | Default value | Unit |
| max core file size | -c | unlimited | KB |
| max data segment size | -d | unlimited | KB |
| max scheduling priority (nice) | -e | 0 | Unscaled |
| max file size | -f | unlimited | KB |
| max (real-time) pending signals | -i | <varies> | Unscaled |
| max locked memory | -l | <varies> | KB |
| max memory size | -m | unlimited | KB |
| max open files | -n | 1024 | Unscaled |
| max pipe size | -p | 8 | 512-byte increments |
| max POSIX message queues | -q | <varies> | Unscaled |
| max real-time scheduling priority | -r | 0 | Unscaled |
| max stack segment size | -s | 8192 | KB |
| max CPU time | -t | unlimited ... |
