tagchange(USP)

Name

tagchange : Changes the tag name

Synopsis

Usage   : tagchange <oldtag> <newtag>... <tagfile>

        : tagchange -p <prefix> <tagfile>

        : tagchange -r <tagfile>

Version : Tue Jan  9 09:02:34 JST 2024

Edition : 1

Description

In the first form:

Changes tag name of <oldtag> to <newtag> in <tagfile>.

<oldtag>/<newtag> pair can be specified more than once.

In the second form:

Prepends "<prefix>." to the beginning of all tag names in <tagfile>.

If tags already have a prefix, the prefix is replaced with <prefix>.

In the third form:

If tags already have a prefix, the prefix is removed.

If <tagfile> is omitted or specified as "-" then the command reads

from standard input.

If <tagfile> is a zero-byte file, an error occurs.

If <tagfile> is a null file (contains only a tag line), the command

processes normally.

Example 1

Change tag.

$ cat data

TAG1 TAG2 T.TAG3 T.TAG4

a b5 9 10

a b1 40 20

a b3 3 30

$ tagchange TAG1 tag5 T.TAG3 tag6 data

tag5 TAG2 tag6 T.TAG4

a b5 9 10

a b1 40 20

a b3 3 30

Example 2

Prepends or change tag prefix.

$ tagchange -p X data

X.TAG1 X.TAG2 X.TAG3 X.TAG4

a b5 9 10

a b1 40 20

a b3 3 30

Example 3

Remove tag prefix.

$ tagchange -r data

TAG1 TAG2 TAG3 TAG4

a b5 9 10

a b1 40 20

a b3 3 30