tdelete: Delete tables.

Package: nttools

Usage

tdelete table

Description

This task deletes tables. The input may be a general filename template, including wildcard characters, or the name of a list file (preceded by the "@" character) containing table names.

The task checks that the file to be deleted really is a table before deleting it. In order to protect against accidental deletion of files other than tables, text tables may be deleted using 'tdelete' only if 'verify = yes'.

Parameters

table [file name template]: A list of one or more tables to be deleted.

(verify = no) [boolean]: Prompt for confirmation before deleting? It is possible to delete text tables using 'tdelete' if 'verify' is set to "yes".

(default_action = yes) [boolean]: Default action for the verify query. If 'default_action = yes', then the prompt will come back with "yes?" and striking return will proceed with the delete.

go_ahead = yes [boolean]: This is a copy of 'default_action' used for prompting if 'verify = yes'. This parameter is set by the task, it copies the value of 'default_action', but cannot be directly set by the user.

Examples

1. Delete a single table.

cl> tdelete table

2. Delete several tables.

cl> tdelete table1,table2,tab67
cl> tdelete *.tab,a,b,c

In the latter case, the extension is given explicitly because there may be other files beginning with "tab" that are not tables.

3. Delete a list of tables using verify.

cl> tdelete fits*.tab ver+
cl> delete table `fits1.tab' ? (yes): yes
cl> delete table `fits2.tab' ? (yes): yes
cl> delete table `fits3.tab' ? (yes): yes

Bugs

Text tables cannot be deleted by 'tdelete' unless 'verify' is set to yes.

References

This task was written by Phil Hodge.