https://bioinformaticsonline.com/snippets/view/43395/commands-to-remove-white-space-in-text-or-string-using-awk-and-sed-in-linux? https://bioinformaticsonline.com/snippets/view/43395/commands-to-remove-white-space-in-text-or-string-using-awk-and-sed-in-linux Wed, 22 Sep 2021 08:01:34 -0500 https://bioinformaticsonline.com/snippets/view/43395/commands-to-remove-white-space-in-text-or-string-using-awk-and-sed-in-linux text=" ATGGTV AGTGACCTAGAGTGATGA G GGRTTT" echo "$text" | sed 's/ //g' OR echo "$text" | awk '{ gsub(/ /,""); print }' Return: ATGGTVAGTGACCTAGAGTGATGAGGGRTTT echo "$text" | sed 's/^ //g' echo "$text" | sed 's/ \$//g' #Multiple space cat /tmp/test.txt | sed 's/[ ]\+/ /g' echo "$text1" | awk '{ gsub(/[ ]+/," "); print }' cat /tmp/test.txt | awk '{ gsub(/[ ]+/," "); print }']]> Neel