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I've run plenty of commands on my terminal, their results are displayed on it.
It's time I'm willing to search among what is written, without re-running the commands that produced these results.
Only by doing a grep on the current console content.
Does a way exist to do so ?
if, for exemple, this is displayed in my console:
Hello !
ERROR: bad argument: -2
Wait... Retry...
with other pages before (accessible by page up key), how do I grep it?
Assuming you are on a Linux system, working on tty[A], then you should be able to use the backlog (/dev/vcs[A]) for that purpose.
Unfortunately, there are no newlines, so grepping into a single line…will not be very efficient. You'll need to format the output a bit first using fold
Assuming you get an 80 columns display, then:
fold -w 80 /dev/vcs[A] | grep TheStringYouWish
Should just do it.
Since fold splits lines longer than the specified width, if the searched pattern was originally part of such long lines, the above command will output only one part of the original line.
One could find handy to use the -A and -P options of grep to workaround this.
And of course you'll want to run that from another tty just in order not to possibly ruin your precious backlog of tty[A]… ;-P
If you have xclip installed then highlight/copy the chunk of text you want to search and then:
xclip -o | grep my_string
grepon it. If the terminal application saves it, then you will have to investigate whether your terminal supports accessing that buffer somehow. You have not mentioned whether you are using a graphical terminal or not (although theconsoletag possibly implies that you don't).execbefore you run your commands) to some file and to the same terminal too (and when you need grep something you can do it in your file)M-x shellin Emacs really shines. There are some corner cases where it works poorly but in general, it works surprisingly well. Of course, you have to run the terminal inside Emacs in the first place to reap the benefits.