Only grep for lines that only contain alphabetical characters

Question

Question: How can I grep for lines that ONLY have the following characters (all in lowercase)?

aábcdeéfghiíjklmnoóöőpqrstuúüűvwxyz

example:

INPUT:

árvíztűrő tükörfúrógép
árvíztűrő tü3körfúrógép
"árvíztűrő tükörfúrógép

OUTPUT:

árvíztűrő tükörfúrógép

grep -x '[aábcdeéfghiíjklmnoóöőpqrstuúüűvwxyz ]\+' — Costas, Feb 12 '15 at 17:49
So, you mean "only lowercase letters and spaces", right? — Scott, Feb 12 '15 at 18:02
I removed the space from Costas answer, no space needed, thanks! — user90825, Feb 12 '15 at 18:07

Costas · Accepted Answer · 2015-02-12 19:51:45Z

1

grep -x '[aábcdeéfghiíjklmnoóöőpqrstuúüűvwxyz ]\+'

answered Feb 12 '15 at 19:51

Costas

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