Linux – Globally Coloring the Terminal by Regex

colorconsolelinuxregex

I know many programs use color – (vim, ack, color-ls to name a few) but there are still many cases where you're stuck with black and white.

There are scripts that will color output based on regular expressions (i.e. "make anything that matches 'dog' red") but these must be invoked with pipes – for example: "> cat myfile | color dog red" and this is useless for anything interactive.

What I'm looking for is something that hooks the terminal emulator (or an terminal that actually does this) and colors anything that matches a given regex, independent of the shell or program i'm currently using. If this works with ncurses as well that would be awesome. I have too many monochrome programs and it would be great if I could specify a list of keywords to highlight/color when they appear or are typed.

I use Guake console which probably uses GNOME Terminal, I don't know if GNOME has this feature already.

Best Answer

Short version is: why, yes, you can pipe output from the shell, like any other program.

From there, you can use whatever you like, like, say

$ bash | sed "$(echo -e "s@dog@\e[31mdog\e[0m@g; s@more here@more here@g;")"

Thought I'd add my 'rainbow'. Enjoy:

for((b=0;$b<8;b++)); do echo -ne "\e[4${b}m4$b : "; \
  for((f=0;$f<8;f++)); do echo -ne "\e[3${f}m3${f}"; done; echo -e "\e[0m"; done

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Linux – What exactly do the colors in htop status bars mean

Hitting F1 or h will show you the key. But for reference, the default colors are:

CPU:

Blue = Low priority threads
Green = Normal priority threads
Red = Kernel threads

Memory:

Green = Used memory
Blue = Buffers
Yellow/Orange = Cache

There are a couple of different color-schemes available, you can see them through hitting F2.

Nginx: location regex for multiple paths

According to nginx documentation:

Then regular expressions are checked, in the order of their appearance in the configuration file. The search of regular expressions terminates on the first match, and the corresponding configuration is used.

In your configuration, the following location is defined before the one with the proxy_pass and it matches the request of js and css files under static:

  location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ {
    expires max;
    log_not_found off;
  }

Unfortunately the "log_not_found off" clause disables the logging for any file-not-found error related to this location, that's why your error_log is empty!

You can try to comment out this location or move it after the location with the proxy_pass (if you need it for other files not in static / media).

Best Answer

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Linux – What exactly do the colors in htop status bars mean

Nginx: location regex for multiple paths

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