77 lines
2.2 KiB
Go
77 lines
2.2 KiB
Go
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/*
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Copyright © 2022 Lukas Bachschwell <lukas@lbsfilm.at>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cmd
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import (
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"os"
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"path/filepath"
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"strings"
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log "github.com/s00500/env_logger"
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"github.com/spf13/cobra"
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)
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// hostnameCmd represents the hostname command
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var hostnameCmd = &cobra.Command{
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Use: "hostname",
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Short: "Change the hostname of the system easily",
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Long: `Change the hostname of the system easily`,
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Args: cobra.ExactArgs(1),
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Run: func(cmd *cobra.Command, args []string) {
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hostname := args[0]
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log.Println("changing hostname to ", hostname)
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prepareWorkdir()
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// read current
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fileDat, err := os.ReadFile(filepath.Join(workdir, "etc", "hostname"))
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log.MustFatal(err)
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oldName := strings.TrimSpace(string(fileDat))
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if oldName == "" {
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log.Fatal("Could not get old hostname")
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}
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// Write new Hostnbame
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err = os.WriteFile(filepath.Join(workdir, "etc", "hostname"), []byte(hostname), 0755)
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log.MustFatal(err)
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// Finally replace all in host file
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hostsDat, err := os.ReadFile(filepath.Join(workdir, "etc", "hosts"))
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log.MustFatal(err)
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hostsNew := strings.ReplaceAll(string(hostsDat), oldName, hostname)
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err = os.WriteFile(filepath.Join(workdir, "etc", "hosts"), []byte(hostsNew), 0755)
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log.MustFatal(err)
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createOutput()
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},
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}
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func init() {
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rootCmd.AddCommand(hostnameCmd)
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// Here you will define your flags and configuration settings.
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// Cobra supports Persistent Flags which will work for this command
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// and all subcommands, e.g.:
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// hostnameCmd.PersistentFlags().String("foo", "", "A help for foo")
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// Cobra supports local flags which will only run when this command
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// is called directly, e.g.:
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// hostnameCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
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}
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