diff --git a/build.go b/build.go
index 7d9c3d6..f645dd0 100644
--- a/build.go
+++ b/build.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package main
import (
diff --git a/config.go b/config.go
index c8379bf..6126070 100644
--- a/config.go
+++ b/config.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package main
import (
diff --git a/distro/osrelease.go b/distro/osrelease.go
index 6131d4e..bc53db8 100644
--- a/distro/osrelease.go
+++ b/distro/osrelease.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package distro
import (
diff --git a/download/download.go b/download/download.go
index 470acfe..b823b08 100644
--- a/download/download.go
+++ b/download/download.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package download
import (
diff --git a/install.go b/install.go
index 6f8fbd7..0183941 100644
--- a/install.go
+++ b/install.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package main
import (
diff --git a/internal/shutils/decoder/decoder.go b/internal/shutils/decoder/decoder.go
index c0c1051..d170f3c 100644
--- a/internal/shutils/decoder/decoder.go
+++ b/internal/shutils/decoder/decoder.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package decoder
import (
diff --git a/internal/shutils/exec.go b/internal/shutils/exec.go
index b953357..ef1cb41 100644
--- a/internal/shutils/exec.go
+++ b/internal/shutils/exec.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package shutils
import (
diff --git a/internal/shutils/nop.go b/internal/shutils/nop.go
index 7af363f..8c4d905 100644
--- a/internal/shutils/nop.go
+++ b/internal/shutils/nop.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package shutils
import (
diff --git a/main.go b/main.go
index c06ad94..10fa6d3 100644
--- a/main.go
+++ b/main.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package main
import (
diff --git a/manager/apk.go b/manager/apk.go
index 4f12b18..75551f9 100644
--- a/manager/apk.go
+++ b/manager/apk.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package manager
import (
diff --git a/manager/apt.go b/manager/apt.go
index c1d93c8..078c83d 100644
--- a/manager/apt.go
+++ b/manager/apt.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package manager
import (
diff --git a/manager/dnf.go b/manager/dnf.go
index 2a11e99..5fd0521 100644
--- a/manager/dnf.go
+++ b/manager/dnf.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package manager
import (
diff --git a/manager/managers.go b/manager/managers.go
index a94e122..507ded8 100644
--- a/manager/managers.go
+++ b/manager/managers.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package manager
import (
diff --git a/manager/pacman.go b/manager/pacman.go
index 0a4fd8f..60472ef 100644
--- a/manager/pacman.go
+++ b/manager/pacman.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package manager
import (
diff --git a/manager/yum.go b/manager/yum.go
index 7186361..615cf3c 100644
--- a/manager/yum.go
+++ b/manager/yum.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package manager
import (
diff --git a/manager/zypper.go b/manager/zypper.go
index b0d0652..97f90b7 100644
--- a/manager/zypper.go
+++ b/manager/zypper.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package manager
import (
diff --git a/repo.go b/repo.go
index 58c05fe..df34dde 100644
--- a/repo.go
+++ b/repo.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package main
import (
diff --git a/upgrade.go b/upgrade.go
index 122e7d7..16db042 100644
--- a/upgrade.go
+++ b/upgrade.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package main
import (
diff --git a/version.go b/version.go
index 6700799..d1e4cd7 100644
--- a/version.go
+++ b/version.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package main
import (
diff --git a/version_test.go b/version_test.go
index 863798c..461cbb8 100644
--- a/version_test.go
+++ b/version_test.go
@@ -1,3 +1,21 @@
+/*
+ * LURE - Linux User REpository
+ * Copyright (C) 2022 Arsen Musayelyan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
package main
import (