diff --git a/ipset/def.sh b/ipset/def.sh
index 5e7bb43..4be9e8d 100644
--- a/ipset/def.sh
+++ b/ipset/def.sh
@@ -103,12 +103,20 @@ zzexist()
 {
  [ -f "$1.gz" ] || [ -f "$1" ]
 }
+zztest()
+{
+ gzip -t "$1" 2>/dev/null
+}
 zzcat()
 {
  if [ -f "$1.gz" ]; then
  	gunzip -c "$1.gz"
  elif [ -f "$1" ]; then
- 	cat "$1"
+	if zztest "$1"; then
+ 		gunzip -c "$1"
+	else
+	 	cat "$1"
+	fi
  fi
 }
 zz()
diff --git a/ipset/get_reestr_hostlist.sh b/ipset/get_reestr_hostlist.sh
index 79c2e6f..6691268 100755
--- a/ipset/get_reestr_hostlist.sh
+++ b/ipset/get_reestr_hostlist.sh
@@ -16,7 +16,7 @@ dl_checked()
   # $3 - minsize
   # $4 - maxsize
   # $5 - maxtime
-  curl -H "Accept-Encoding: gzip" -k --fail --max-time $5 --connect-timeout 10 --retry 4 --max-filesize $4 "$1" | gunzip - >"$2" ||
+  curl -k --fail --max-time $5 --connect-timeout 10 --retry 4 --max-filesize $4 -o "$2" "$1" ||
   {
    echo list download failed : $1
    return 2
diff --git a/ipset/get_reestr_preresolved.sh b/ipset/get_reestr_preresolved.sh
index db6f288..6e530e7 100755
--- a/ipset/get_reestr_preresolved.sh
+++ b/ipset/get_reestr_preresolved.sh
@@ -19,7 +19,7 @@ dl()
   # $2 - file
   # $3 - minsize
   # $4 - maxsize
-  curl -H "Accept-Encoding: gzip" -k --fail --max-time 120 --connect-timeout 10 --retry 4 --max-filesize $4 "$1" | gunzip - >"$TMPLIST" ||
+  curl -H "Accept-Encoding: gzip" -k --fail --max-time 120 --connect-timeout 10 --retry 4 --max-filesize $4 -o "$TMPLIST" "$1" ||
   {
    echo list download failed : $1
    exit 2
@@ -29,7 +29,7 @@ dl()
    echo list is too small : $dlsize bytes. can be bad.
    exit 2
   fi
-  zz "$2" <"$TMPLIST"
+  zzcat "$TMPLIST" | zz "$2"
   rm -f "$TMPLIST"
 }
 
diff --git a/ipset/get_reestr_preresolved_smart.sh b/ipset/get_reestr_preresolved_smart.sh
index f4a1395..d31c0b3 100755
--- a/ipset/get_reestr_preresolved_smart.sh
+++ b/ipset/get_reestr_preresolved_smart.sh
@@ -19,7 +19,7 @@ dl()
   # $2 - file
   # $3 - minsize
   # $4 - maxsize
-  curl -H "Accept-Encoding: gzip" -k --fail --max-time 120 --connect-timeout 10 --retry 4 --max-filesize $4 "$1" | gunzip - >"$TMPLIST" ||
+  curl -H "Accept-Encoding: gzip" -k --fail --max-time 120 --connect-timeout 10 --retry 4 --max-filesize $4 -o "$TMPLIST" "$1" ||
   {
    echo list download failed : $1
    exit 2
@@ -29,7 +29,7 @@ dl()
    echo list is too small : $dlsize bytes. can be bad.
    exit 2
   fi
-  zz "$2" <"$TMPLIST"
+  zzcat "$TMPLIST" | zz "$2"
   rm -f "$TMPLIST"
 }
 
diff --git a/ipset/get_reestr_resolvable_domains.sh b/ipset/get_reestr_resolvable_domains.sh
index fa4837f..d2defdc 100755
--- a/ipset/get_reestr_resolvable_domains.sh
+++ b/ipset/get_reestr_resolvable_domains.sh
@@ -18,7 +18,7 @@ dl()
   # $2 - file
   # $3 - minsize
   # $4 - maxsize
-  curl -H "Accept-Encoding: gzip" -k --fail --max-time 120 --connect-timeout 10 --retry 4 --max-filesize $4 "$1" | gunzip - >"$TMPLIST" ||
+  curl -H "Accept-Encoding: gzip" -k --fail --max-time 120 --connect-timeout 10 --retry 4 --max-filesize $4 -o "$TMPLIST" "$1" ||
   {
    echo list download failed : $1
    exit 2
@@ -28,7 +28,7 @@ dl()
    echo list is too small : $dlsize bytes. can be bad.
    exit 2
   fi
-  zz "$2" <"$TMPLIST"
+  zzcat "$TMPLIST" | zz "$2"
   rm -f "$TMPLIST"
 }
 
diff --git a/ipset/get_reestr_resolve.sh b/ipset/get_reestr_resolve.sh
index 5421063..924a073 100755
--- a/ipset/get_reestr_resolve.sh
+++ b/ipset/get_reestr_resolve.sh
@@ -19,7 +19,7 @@ dl_checked()
   # $3 - minsize
   # $4 - maxsize
   # $5 - maxtime
-  curl -H "Accept-Encoding: gzip" -k --fail --max-time $5 --connect-timeout 10 --retry 4 --max-filesize $4 "$1" | gunzip - >"$2" ||
+  curl -k --fail --max-time $5 --connect-timeout 10 --retry 4 --max-filesize $4 -o "$2" "$1" ||
   {
    echo list download failed : $1
    return 2