Common Glob Patterns
Glob patterns implemented in the Tetra File Log Agent provide methods to traverse the file system and return files or the folder that matches a defined set of glob patterns.
The following pattern rules are accepted in the Tetra File-Log Agent:
| Patterns | Description |
|---|---|
| * | matches any number of characters including none, excluding directory separator |
| ** | match zero or more directories |
| ? | matches a single character |
| / -or- \ | path separators |
| [abc] | matches one character in the brackets |
| [!abc] | matches any character not in the brackets |
| {abc,123} | comma-delimited set of literals, matched 'abc' or '123' |
Case insensitive
In current versions of the File Log Agent (up to and including 4.2) the only alphabetical characters which are supported within file paths are the standard 26 characters of the Latin alphabet. Any alphabetical character beyond these will cause undesirable duplication of data.
Testing glob patterns
You can test your glob patterns via web apps such as Glob tester.
Common usage Samples
In the following examples, the path defined in the config.json is C:\temp\Source.
Searching Folder
Pattern: *
Description: Return all of the folders at the current folder path (C:\temp\Source)
Pattern: A*
Description: Return all of the folders at the current folder path (C:\temp\Source)
with the folder name starting as A
Pattern: */*
Description: Return all of the folders at the first level under the current folder path (`C:\temp\Source`)
Pattern: */*/*
Description: Return all of the folders at the second level under the current folder path (`C:\temp\Source`)
Pattern: Logs
Description: Get a specific folder `Logs` at the current folder path (`C:\temp\Source`)
Patterns: **
Description: Return all of the folders recursively under the current folder path
by traversing down the current folder path (`C:\temp\Source`)
Pattern: **/AuditTrail
Description: Return all of the folder named as `AuditTrail`
by traversing down the current folder path (`C:\temp\Source`)
Pattern: **/*AuditTrail*
Description: Return all of the folder named as `AuditTrail`
by traversing down the current folder path (`C:\temp\Source`)
Pattern: AuditTrail/2020-06-07
Description: Return the exact folder, `C:\temp\Source\AuditTrail\2020-06-07`
NOTE
When using the Folder Mode for File Watcher Service, if the pattern is empty, the Agent will monitor the path itself.
Searching File
Pattern: *.txt
Description: Return all of the files with extension as txt at the current folder path (`C:\temp\Source`)
Pattern: .{log,txt}
Description: Rreturn all of the files with file extension either as .log or .txt at the current folder path (`C:\temp\Source`)
Pattern: info*.txt
Description: Return all of the files with the name starting with `info` at the current folder path (`C:\temp\Source`)
Pattern: info?.txt
Description: Return all of the files with the name starting with `info` and only has one character after that at the current folder path (`C:\temp\Source`). Same expamples: info2.txt, infoz.txt
Pattern: info[123a].txt
Description: Return all of the files with the file name starting with `info` and only has one character after that. The matched character is among the characters of `1`, `2`, `3` or `a`.
Pattern: info[!123a].txt
Description: Return all of the files with the file name starting with `info` and only has one character after that. The matched character is not any of the characters of `1`, `2`, `3` or `a`.
Pattern: [!~]*.txt
Description: Return all of the files with file extension as txt and the file name doesn't start with ~.
This pattern can be used to exclude the temp files generated by the Windows.
Pattern: **/*
Description: Return all of the files
by traversing down the current folder path (C:\temp\Source)) recursively
Pattern: **/EVO
Description: Return all of the files with file name starting with `EVO` by travsing down the current folder path (C:\temp\Source)) recursively
Pattern: **/*EVO*
Description: Return all of the files with file name containing `EVO` by travsing down the current folder path (C:\temp\Source)) recursively
Pattern: **/{EVO,LOG,ERROR}*
Description: Return all of the files with file name starting with `EVO`, `LOG`or `ERROR`, by travsing down the current folder path (C:\temp\Source)) recursively
Updated 12 months ago