On 2017-06-09 03:55, Patrick Shanahan wrote:

* Carlos E. R. <robin.listas@telefonica.net> [06-08-17 20:20]:

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In tmux it appears that I can not page up to see previous screen output. Is it possible to go back somehow? Or even better, dump all the text somewhere?

yes unless you have changed the configuration, the default keys are <ctrl><b> <page-up/down> will take you thru the screen buffer up/down

Oh! Indeed. A bit cumbersome, though. Ah! Type once, then just pg-up/dn works. :-)

<ctrl><b> s <ctrl><b> r will search thru history

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Or, is it possible to tell it to log all output to a file?

I don't do that but it is possible, even to select and save. see the fine manual

Sigh. If they'd wrote them for dummies, easy to read... -v Request verbose logging. This option may be specified multiple times for increasing verbosity. Log messages will be saved into tmux-client-PID.log and tmux-server-PID.log files in the current directory, where PID is the PID of the server or client process. Not usable now for an already running tmux session. I don't see a keybinding for it. This: capture-pane [-aepPq] [-b buffer-name] [-E end-line] [-S start-line] [-t target-pane] (alias: capturep) Capture the contents of a pane. If -p is given, the output goes to stdout, otherwise to the buffer specified with -b or a new buffer if omitted. If -a is given, the alternate screen is used, and the history is not accessible. If no alternate screen exists, an error will be returned unless -q is given. If -e is given, the output includes escape sequences for text and background attributes. -C also escapes non-printable characters as octal \xxx. -J joins wrapped lines and preserves trailing spaces at each line's end. -P captures only any output that the pane has received that is the beginning of an as-yet incomplete escape sequence. -S and -E specify the starting and ending line numbers, zero is the first line of the visible pane and negative numbers are lines in the history. ‘-’ to -S is the start of the history and to -E the end of the visible pane. The default is to capture only the visible contents of the pane. I don't understand a word of it :-( What I need is send the entire history of a session that is already running (it has a crash dump of a program) to a file. I can not restart tmux now, it would be lost. The only way I now is page-dn, select with mouse, paste to another window, repeat a hundred times :-( If tmux were not running, I'd use menu-select-all, copy. Then paste on another window, done, email. Wild guess test. cer@Telcontar:~> ssh -X cer@Isengard.valinor Last login: Fri Jun 9 03:58:33 2017 from 192.168.1.14 Have a lot of fun... cer@Isengard:~> tmux capture-pane -p > capture cer@Isengard:~> l capture -rw-r--r-- 1 cer users 1490 Jun 9 04:20 capture cer@Isengard:~> Well! It does capture the text, but only the visible part. I want all! cer@Isengard:~> tmux capture-pane -p -S 1 -E 1200 > capture Only visible lines. Not good. man says: -S and -E specify the starting and ending line numbers, zero is the first line of the visible pane and negative numbers are lines in the history. ‘-’ to -S is the start of the history and to -E the end of the visible pane. The default is to capture only the visible contents of the pane. Got it! cer@Isengard:~> tmux capture-pane -p -S- -E- > capture cer@Isengard:~> l capture -rw-r--r-- 1 cer users 65842 Jun 9 04:26 capture cer@Isengard:~> cer@Isengard:~> wc -l capture 1195 capture Wow! Did it! :-))) -- Cheers / Saludos, Carlos E. R. (from 42.2 x86_64 "Malachite" at Telcontar)