unix - non - vim case insensitive search
How do you do a case insensitive search using a pattern modifier using less? (4)
Add-on to what @Juha said: Actually
turns on Case-insensitive with SmartCasing, i.e if your search contains an uppercase letter, then the search will be case-sensitive, otherwise, it will be case-insensitive. Think of it as
, a search for 'log' in 'Log,..' will match, whereas 'Log' in 'log,..' will not match.
It seems like the only way to do this is to pass the -i parameter in when you initially run less. Does anyone know of some secret hack to make something like this work
/something to search for/i
It appears that you can summon this feature on a per search basis like so:
less prompt> /search string/-i
This option is in
's interactive help which you access via
less prompt> h ... -i ........ --ignore-case Ignore case in searches that do not contain uppercase. -I ........ --IGNORE-CASE Ignore case in all searches. ...
I've not extensively checked but the help in
version 487 on MacOS as well as other Linux distros lists this option as being available.
On MacOS you can also install a newer version of
$ brew install less $ less --version less 530 (POSIX regular expressions) Copyright (C) 1984-2017 Mark Nudelman
You can also set the environment variable
, so that I can pump colorized output from
into it, and maintain the ANSI colour sequences.
Another little used feature of less that I found is starting it with
as an argument (or hitting
while in less). This causes it to follow the file you've opened, in the same way that
tail -f <file>
will. Very handy if you're watching log files from an application, and are likely to want to page back up (if it's generating 100's of lines of logging every second, for instance).
You can also type command
while less is running. It toggles case sensitivity for searches.