tr¶ replace newline with comma¶ tr '\n' ',' strip newline from input¶ If you do this and paste it afterwards, it'll add a newline or will even be used as return in some forms: head -c 32 /dev/urandom|base64|pbcopy strip the newline do it like this, tr -d '\n' is the key: head -c 32 /dev/urandom|base64|tr -d '\n'|pbcopy