Modifiers (Debugging with GDB)
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Gdb/docs/latest/gdb/Modifiers
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33.1.3 Modifiers
After the optional word designator, you can add a sequence of one or more of the following modifiers, each preceded by a ‘:
’. These modify, or edit, the word or words selected from the history event.
h
- Remove a trailing pathname component, leaving only the head.
t
- Remove all leading pathname components, leaving the tail.
r
- Remove a trailing suffix of the form ‘
.suffix
’, leaving the basename. e
- Remove all but the trailing suffix.
p
- Print the new command but do not execute it.
s/old/new/
- Substitute
new
for the first occurrence ofold
in the event line. Any character may be used as the delimiter in place of ‘/
’. The delimiter may be quoted inold
andnew
with a single backslash. If ‘&
’ appears innew
, it is replaced byold
. A single backslash will quote the ‘&
’. Ifold
is null, it is set to the lastold
substituted, or, if no previous history substitutions took place, the laststring
in a !?string
[?]
search. Ifnew
is is null, each matchingold
is deleted. The final delimiter is optional if it is the last character on the input line. &
- Repeat the previous substitution.
g
a
- Cause changes to be applied over the entire event line. Used in conjunction with ‘
s
’, as ings/old/new/
, or with ‘&
’. G
- Apply the following ‘
s
’ or ‘&
’ modifier once to each word in the event.