Use:
git diff --color=always | less -r
--color=always
is there to tell git
to output color codes even if the output is a pipe (not a tty). And -r
is there to tell less
to interpret those color codes and other escape sequences. Use -R
for ANSI color codes only.
UPDATE: I've added a new (different) script... Ignacio Vazquez-Abrams
had a point: The question really asks for executable scripts are green, et cetera
.. okay... you'll find such a (prototype) script at the end of this answer.
This first (original) section is about grc
and grcat
.
This should work; grc
... (as enzotib has pointed out.. The package name is grc
... The sub-utility used in the example, is grcat
generic colouriser for everything
generic colouriser, can be used to colourise logfiles,
output of commands, arbitrary text....
configured via regexp's.
The following example prints
./
in magenta
bin/cpp/
in cyan
bigint
in bold white
I haven't fully sorted out how it handles it config file yet, but this looks like it will do what you want (once you tame it).. eg. for a file with no sub-dir, and the color sequence seems to not be in the same sequence as the expressions.
I assume it is possible (but I'm a bit busy at the moment)...
echo "# my config file
regexp=(\./)(.*/)([^/]+)
colours=bold white,magenta,cyan
">$HOME/.grc/findhi
find . -maxdepth 3 -name '*' | grcat findhi
Here is the new Ignacio inspired script :)
This works if you use a single path as the first arg to find
.
There are UNTESTED issues in this script. It is only concept.
One issue is: Symbolic Links... murky waters...
As-is, it prints an ERROR
when it encounters an unknown type (eg. a symbolic link), and then continues processing past that.
Thanks to enzotib
for the tput
examples.
dircol=$(tput bold ;tput setaf 4)
coloff=$(tput sgr0)
root="$HOME" # define path here, not in 'find` arg
root="${root:-.}" # default to '.'
root="${root%/}/" # add trailing '/'
#
find "$root" -maxdepth 1 -name '*' -printf "%y %P\n" |
while read -r line ;do
case $line in
d ) printf "%s\n" "$dircol$root$coloff";;
d\ *) printf "%s\n" "$dircol$root${line:2}$coloff";;
f\ *) l="$root${line:2}"
d="${l%/*}/"
f="${l##*/}"
cd -P "$d"
printf "%s" "$dircol$d$coloff"
ls --color=always -R1 "$f"
cd - >/dev/null
;;
*) printf "ERROR - type not yet catered for\n";;
esac
done
Best Answer
There are too many sources of information to list in this page:
echo -e
uses an extension to render\e
as ASCII 27 (octal 33 or "\033"). The portable way to print these usesprintf
(POSIX). Compare with standardecho
(POSIX).Your example can be rewritten as
printf "\033[34m Hello\n \033[0m"
you can also read the manual pages for
tput
, which allows you to useterminfo
capabilities in a shell script. Your example could be rewritten asa few sources such as the Bash Prompt HOWTO and the Advanced Bash-Scripting Guide mention color, but (even these) as a rule have gaps and omissions and are not helpful with respect to ECMA-48.