kkdd · December 30, 2019 15:32
diff --git a/file0.txt b/file0.txt
 $ echo -e "11pp22\n33qq" | while read line; do esc=$(printf '\033'); echo $line | gsed -e "s,\([0-9]\+\)\([a-z]\+\)\([0-9]\+\)$,\1${esc}[32m\2${esc}[0m\3,"; done
 11pp22
 33qq
diff --git a/file1.txt b/file1.txt
 $ echo -e "111a222\n333" | GREP_COLOR='01;32' grep -E --color '^|\d+a'
 111a222
 333
 $
	$ echo -e "11pp22\n33qq" \| while read line; do esc=$(printf '\033'); echo $line \| gsed -e "s,\([0-9]\+\)\([a-z]\+\)\([0-9]\+\)$,\1${esc}[32m\2${esc}[0m\3,"; done
	11pp22
	33qq
	$ echo -e "111a222\n333" \| GREP_COLOR='01;32' grep -E --color '^\|\d+a'
	111a222
	333
	$