use head -n

acme.sh

@@ -1049,7 +1049,7 @@ _send_signed_request() {
   
   _debug3 _headers "$_headers"
   
-  nonce="$( echo "$_headers" | grep "Replay-Nonce:" | head -1 | tr -d "\r\n " | cut -d ':' -f 2)"
+  nonce="$( echo "$_headers" | grep "Replay-Nonce:" | head -n 1 | tr -d "\r\n " | cut -d ':' -f 2)"
 
   _debug3 nonce "$nonce"
   
@@ -2412,7 +2412,7 @@ issue() {
   fi
   
   _rcert="$response"
-  Le_LinkCert="$(grep -i '^Location.*$' $HTTP_HEADER | head -1 | tr -d "\r\n" | cut -d " " -f 2)"
+  Le_LinkCert="$(grep -i '^Location.*$' $HTTP_HEADER | head -n 1 | tr -d "\r\n" | cut -d " " -f 2)"
   _savedomainconf "Le_LinkCert"  "$Le_LinkCert"
 
   if [ "$Le_LinkCert" ] ; then
@@ -2451,7 +2451,7 @@ issue() {
   
   _cleardomainconf  "Le_Vlist"
   
-  Le_LinkIssuer=$(grep -i '^Link' $HTTP_HEADER | head -1 | cut -d " " -f 2| cut -d ';' -f 1 | tr -d '<>' )
+  Le_LinkIssuer=$(grep -i '^Link' $HTTP_HEADER | head -n 1 | cut -d " " -f 2| cut -d ';' -f 1 | tr -d '<>' )
   if ! _contains "$Le_LinkIssuer" ":" ; then
     Le_LinkIssuer="$API$Le_LinkIssuer"
   fi

dnsapi/dns_cf.sh

@@ -61,7 +61,7 @@ dns_cf_add(){
     _err "Add txt record error."
   else
     _info "Updating record"
-    record_id=$(printf "%s\n" "$response" | _egrep_o \"id\":\"[^\"]*\" | cut -d : -f 2 | tr -d \"| head -1)
+    record_id=$(printf "%s\n" "$response" | _egrep_o \"id\":\"[^\"]*\" | cut -d : -f 2 | tr -d \"| head -n 1)
     _debug "record_id" $record_id
     
     _cf_rest PUT "zones/$_domain_id/dns_records/$record_id"  "{\"id\":\"$record_id\",\"type\":\"TXT\",\"name\":\"$fulldomain\",\"content\":\"$txtvalue\",\"zone_id\":\"$_domain_id\",\"zone_name\":\"$_domain\"}"
@@ -103,7 +103,7 @@ _get_root() {
     fi
     
     if printf $response | grep \"name\":\"$h\" >/dev/null ; then
-      _domain_id=$(printf "%s\n" "$response" | _egrep_o \"id\":\"[^\"]*\" | head -1 | cut -d : -f 2 | tr -d \")
+      _domain_id=$(printf "%s\n" "$response" | _egrep_o \"id\":\"[^\"]*\" | head -n 1 | cut -d : -f 2 | tr -d \")
       if [ "$_domain_id" ] ; then
         _sub_domain=$(printf $domain | cut -d . -f 1-$p)
         _domain=$h