How To Append Lines To File If They Do Not Exist¶
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | FILE=/etc/samba/smb.conf LINES=$(cat <<EOF [scan] Comment = Scans Path = /var/scan Browseable = yes Writeable = Yes only guest = no guest ok = no create mask = 0777 directory mask = 0777 Public = no EOF ) grep -q "${LINES}" ${FILE} && echo "Nothing to do" || \ echo "${LINES}" | tee -a ${FILE} |