[SOLVED] Grep doesn't work when adding an extra character at the end of operator

Issue

I am grepping (Ubuntu) multiples files with this command:

LANG=en_US.UTF-8 grep  -P -R -i -I -H -A1 "^name#.*?r[AÀÁÂÃÄaàáâãä]f[AÀÁÂÃÄaàáâãä][EÈÉÊËeèéêë]l s[IÌÍÎÏiìíîï]m[OÔÒÓÕÖoòóôõö].*?#.*?#.*?#.*?#.*?\$" image_args_*

Which returns a few results, this being of them:

image_args_search_134.txt:name#Rafael Simões Vieira#1767###Emerenciana Rodrigues de Oliveira
image_args_search_134.txt-#bati.#134#somelinkhere.com##
--

but if I add [EÈÉÊËeèéêë] as part of the operator like shown below:

LANG=en_US.UTF-8 grep  -P -R -i -I -H -A1 "^name#.*?r[AÀÁÂÃÄaàáâãä]f[AÀÁÂÃÄaàáâãä][EÈÉÊËeèéêë]l s[IÌÍÎÏiìíîï]m[OÔÒÓÕÖoòóôõö][EÈÉÊËeèéêë].*?#.*?#.*?#.*?#.*?\$" image_args_*

Then I get nothing.

Why is that? Thanks!

Solution

I see your problem only, if i use some not installed locales.

Please verify that the required locales are activated (not commended out by leading #)

grep "en_US" /etc/locales.gen

# en_US ISO-8859-1
# en_US.ISO-8859-15 ISO-8859-15
en_US.UTF-8 UTF-8

(The file /etc/locales.gen can be configured to your needs by removing the commenting #)

Assure that these configured locales are really generated:

sudo update-locale

Answered By - dodrg

Answer Checked By - Willingham (WPSolving Volunteer)