less is a terminal pager program used to view (but not change) the contents of a text file one screen at a time.

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less command and syntax highlighting

I need to use the less command with the syntax highlighting of the vim command for python, C, bash and other languages. How do I apply syntax highlighting colors according to vim colors for less ...
6
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2answers
198 views

How can I pipe colored tree result to less or more?

I get colored tree using tree -C but when I pipe it to less I get results like this: tree public/ -C | less How can I have colors in less in this case?
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votes
2answers
136 views

Shift-Space in less

In modern web browsers and other software with text content, Space scrolls down more or less a screenful. ShiftSpace scrolls up in everything but less. How can one use ShiftSpace to scroll up in ...
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2answers
123 views

Viewing very wide files

I need to view some 5,200 byte wide files. Is there any tool to make this practical without modifying the file? Ideally, I'd like to specify which columns I'm viewing.
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2answers
202 views

Can I get vim-stlye (hjkl) navigation for GNU info?

The layout of my netbook's keyboard means that using the arrow keys for navigation is slightly uncomfortable. Is there a way to make GNU Info pages use vim-style hjkl navigation? I know I can info ...
0
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1answer
89 views

less or more - which to use when? [duplicate]

less and more seem to have very similar functionality in that they both page through text a screen at a time. What reasons are there to use one over the other?
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2answers
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What are the differences between most, more and less?

I'm now using Arch Linux, and find a command most works like more and less. To understand the differences between them is a confusing problem. This Question has mentioned the differences between less ...
3
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1answer
129 views

How to follow and seek in a file being piped through a filter, in less

I basically wish to seek, search and follow a growing log file after passing it through a sed filter. I figured I need to follow a file with tail -f pipe it to sed and then pipe that to less. For ...
3
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2answers
729 views

Get 'less' to display filename

Something that seemed quite useful to me when looking for a certain var in a bunch of config files: less * | grep some_var So this returns the value of some_var without manually looking through all ...
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3answers
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Characters encodings supported by more, cat and less

I have a text file encoded as following according to file: ISO-8859 text, with CRLF line terminators This file contains French's text with accents. My shell is able to display accent and emacs ...
0
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1answer
166 views

Man displaying groff control characters

Man is displaying groff control characters after I compiled a later version of groff. For example, when I try to view groff's man page: GROFF(1) General Commands Manual ...
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2answers
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How do I pipe colored diff output to less?

I've been using git diff, which produces colored output. However, I now find I need to use ordinary diff for something, and it's producing a lot of output that is hard to read because of the lack of ...
2
votes
1answer
93 views

Making less's follow option show line movement

I often find myself using less to display log files that contain hundreds of contiguous, identical lines that are appended to the files at set intervals. For example, something happened something ...
5
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1answer
342 views

Making less print to stdout if an entire file can be displayed on one screen

When more is passed a file whose contents can be displayed on one screen, it just writes the file's contents to stdout without pagination. If the file cannot fit on one screen, more paginates it. ...
5
votes
2answers
196 views

How do I less a filename rather than an inode number?

I have a piece of software that rotates its log files when it restarts. However, during development, I am restarting it a lot, so I would like to monitor the latest log file at any time. If I start ...
3
votes
3answers
222 views

Stop Git submodule foreach from opening less for each module

I occasionally need to grep through git submodules for which I use: git submodule foreach 'git grep x' However, since switching to zsh I find a less prompt is opened for each submodule, even when ...
3
votes
4answers
527 views

Colored output in less when tailing a logfile

I am in dire need of a way to color my less output while reading a file that is constantly being appended. The file in questions is a Resin servlet container log. My current "implementation" of the ...
3
votes
1answer
2k views

Is GREP_OPTIONS= --color=always ignored?

I was playing around with setting GREP_OPTIONS and couldn't get it to work. Just curious as to why. Simple test commands output: richard@ubuntu:~$ echo $GREP_OPTIONS richard@ubuntu:~$ ...
2
votes
0answers
162 views

Using Unison with colordiff

I want Unison to show the diffs with colordiff. I’ve got diff = colordiff -u CURRENT2 CURRENT1 | less -R in my config file but it seems like Unison pipes the output to plain less nonetheless, so I ...
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0answers
100 views

Command-line file reader (like “less”) that can tell the line where the user stopped reading

[Context] I'm developing a little app, as a hobby to learn ncurses, that catalogs and lists and searches within a set of documents (for now, they are the HOWTOs from TLDP). The most tricky part of ...
5
votes
3answers
291 views

How to scroll large datafile while keeping header

Suppose I have some large datafile, which overflow the screen in both vertical and horizontal direction. How can I browse this file, while the header-lines stay on the screen? For the moment, I am ...
7
votes
2answers
246 views

How to set up hjkl for less?

less already uses j/k for vertical scrolling, but not h/l for horizontal scrolling (in --ch mode). The l key isn't bound to anything anyway, and h is just a synonym for H, so I wouldn't overwrite any ...
4
votes
1answer
1k views

Instant search in less command? (Similar to incsearch in VIM)

Is there a way to search, while I'm typing in less? Just like the vim option, set incsearch. As I didn't find a proper way to do it, is there any similar tool that can do it?
3
votes
1answer
178 views

Why doesn't “cvs --help | less” work?

I don't know why, but piping cvs --help to less doesn't work. Probably it's because cvs --help outputs not to standard output(1) or error output(2), but somewhere else. Could you tell me where does it ...
7
votes
1answer
1k views

Get colors in less command with ccze: Shift + g doesn't go to the end of file?

In all the tools to get colors with less command: -R, Pygments, GNU Source-highlight, vless, ... ccze make me sastified with below command: ccze -A < /path/to/log/file | less -R but Shift+g ...
9
votes
1answer
980 views

How to have tail -f show colored output with vim?

In this question, Gilles answered Yet another possibility is to run tail -f in an Emacs shell buffer and use Emacs's syntax coloring abilities. Because I'm a vim user, I'd like to do this with ...
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2answers
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How to use `cat` or `less` depending on the line count?

When looking at the content of files, I'd like to automatically cat short files but less those that exceed the screen size. I could use something with wc -l, but is there a better way that maybe also ...
2
votes
1answer
280 views

Coloring line numbers in less?

Please consider the following example: $ grep --color=always -n 'Format\|Files' /usr/share/doc-base/doc-base | less -R Here, grep will color also the line numbers of the matches, and less will ...
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1answer
2k views

Is there any way to exit “less” without clearing the screen?

Relatively often, I find myself wanting to quit less but leave what I was viewing on the screen, to refer back to. Is there any way to do this? Workarounds? (My current workaround is to quit, then ...
3
votes
1answer
184 views

Using more command

Is there any case or reason to use "more" unix command instead of "less". As far as I see "less" is "better" in all senses, so does it mean that "more" is a command which has no reason to be used when ...
6
votes
4answers
514 views

pager program like less, able to repeat top N lines

Is there any way to make less program repeat first line (or first 2 lines) on every displayed page? Is there any other pager program which can do this? This would be a killer-app for database table ...
6
votes
3answers
2k views

Follow a pipe using less?

Can less follow (by pressing F) a piped input (similarly to a file)? For a file that is being written to, the command less <file> will follow the file when pressing F. But if I have a ...
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6answers
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Is there a way to make tail -F beep?

Is there a way to make tail -F or less beep (ring the bell in a terminal) when new data comes in (a new line is added to the file). Or is there any other unix utility to do this on a linux or mac.
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4answers
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How can I use man without less?

By default, man uses less to output text. How can I tell it to just output to stdout? My terminal emulator has a scroll bar and search function and I want to use those instead of the arrow keys.
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votes
3answers
651 views

Piping into less and editing: “cannot edit standard input” error. Workarounds?

I recently learned that if I page my files with less, I can press v and open the buffer in Emacs. This works as long as I have the environment variable $EDITOR set up correctly, which in my case I ...
3
votes
1answer
161 views

How can I force less to stop buffering its input line by line?

When reading from stdin, less does not display any output until a whole line has been read. I use a script that prints progress on one line, without printing a newline, and I would really like to be ...
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vote
1answer
76 views

How to make less show the previous lines when searching?

How can I make less show the previous couple of lines when I search for something? I'd like to get rid of the kkk steps in my usual process: /keyword kkk (read) n kkk (read)
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15answers
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Is there ever a reason to use `cat` when you've got `less`?

I used to use cat to view files. Then I learned that less is usually better, and is a must if the file is longer than a few dozen rows. My question: Is there ever a reason to use cat instead of less? ...
55
votes
3answers
15k views

Can less retain colored output?

Can I get less not to monochrome its output? E.g., the output from git diff is colored, but git diff | less is not.
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votes
2answers
176 views

Why do 'man' pages have many extra lines?

When I run the command: man fork There is a highlight line at the bottom that reads: Manual page fork(2) line 52/99 (END) But when I navigate to line 53 and up to 99, these are just blank ...
2
votes
1answer
462 views

What is the `less` command line option to page to the next file at the end of the current one?

I'm sure there used to be an option in less which allowed you to page onto the next file after you reached the end of the current file, so you could just keep *space*ing through a bunch of short files ...
3
votes
2answers
720 views

How to change default “reading” program?

right now when I run man smth or similar less is used to view it. However, on Mac OS X, I really like scrolling with touchpad instead on up/down or page-up/page-down buttons. Is there a way to just ...
2
votes
1answer
238 views

less -j is not working for me

less -jn where n is a line number to jump to is not working for me. It just has no effect. I'm running less version 436 on Ubuntu 11.04. I also tried less --jump-target=200 and LESS='-j200' less ...
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2answers
3k views

How can I view gzipped files in less without having to type zless?

I am using Ubuntu, and I would like to be able to type less compressed_text_file.gz and page the contents of the text file in uncompressed form. Is there a way to do this?
2
votes
2answers
602 views

'less' width issues

I'm connecting to my Linux boxes (primarily Debian Squeeze) using Putty for Windows. Whenever I run a 'less' command, e.g. on an aptitude search, less truncates the listing to much less than my ...
5
votes
2answers
559 views

Unhighlight Last Search in 'less'

When you use a / forward search or a ? backward search in less, all instances of the file get highlighted. After I've found the instance of the word I'm looking for, what is the most correct way to ...
8
votes
3answers
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Force less to display a file as text

Sometimes less wrongly recognize file as binary and tries to show hexdump on LHS (usually ones with non-alphanumeric characters but still containing printable ASCII characters). How to force it to ...
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votes
2answers
2k views

Can less invoke vim instead of the default vi when I hit the 'v' key?

I want to launch vim instead of the default vi editor when I hit v in less. Are there any settings I can modify to allow me to do this?
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votes
2answers
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Colored man pages not working on gentoo

I have a problem using these methods to get colors in my man pages in gentoo. I've asked already in the gentoo forums but it still doesn't work, and the comments in a bug report (Bug 184604) don't ...
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votes
3answers
912 views

Which systems have 'pager' shortcut/alias?

On a Debian system, one can type pager in order to use whatever pager program happens to be default/available. By default, less is used, and if not available, the lesser more gets to do the job. Is ...