# LOGROLL

_Added September 2019_

**LOGROLL \{fspec1\{,...fspecN\}\} \{/switches\}**

LOGROLL rolls over—rotates—log files, for example events.log -> events.l01 -> events.l02, etc. It's a commonly accepted technique for keeping the current log file from getting endlessly large, while at the same time being able to maintain a number of historical/archived copies.

**Switches**

| **Switch** | **Meaning** |
|------|------|
| Switches affecting user interface: | 
| /Q | Query/prompt for confirmation on each file |
| /F | Force confirmation—i.e., roll over without asking |
| Switches limiting selection of files to roll over: | 
| /MINDAYS:### | Roll over only files not modified in at least ### days |
| /MINSIZE:#### | Roll over only files larger than #### blocks |
| Switches limiting number of generations of rolled-over files kept: | 
| /MAXDAYS:### | Discard rolled-over copies beyond ### days old |
| /MAXGENS:### | Discard rolled-over copies beyond ### generations |




**Comments**

Retention of rolled-over copies stops after MAXDAYS or MAXGENS, whichever comes first. Defaults: DAYS=unlimited, GENS=5. If GENS < 100, rolled-over copies will use extension x##, where x is the first character of the original extension. Else rolled-over copies will use extension ### (001,002,...).

**History**

2019 September, A-Shell 6.5.1668:  Added to A-Shell