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I give another one :

$ echo "jfaghkjfhadglkjaaaadfgdffffffdddttttmmmm" | sed 's/\(.\)\1*/\1/g'
jfaghkjfhadglkjadfgdfdtmsed 's/\(.\)\1*/\1/g' explanations :

s/pattern1/pattern2/g | substitute...

I'll do this one for you.
$ grep '\([a-z]\)\([a-z]\)\([a-z]\)\([a-z]\)\([a-z]\).*\5\4\3\2\1' text
orizabus subaziro:ljjljlkjlk:roota:jkjhkjhk


"orizabus subaziro" besides being a palindrome is...