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Added logic to backup .zshrc on kali linux
- .zshrc moved to .zshrc_pre_pimpmyshell.bak
- only when kali version in /etc/os-release >= 2020.4
- use semver for semantic version detection
- Updated Changelog- Loading branch information
Phillip Miller
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Oct 17, 2021
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| package osrelease | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "errors" | ||
| "os" | ||
| "strings" | ||
| ) | ||
|
|
||
| // EtcOsRelease ... | ||
| const EtcOsRelease string = "/etc/os-release" | ||
|
|
||
| // UsrLibOsRelease ... | ||
| const UsrLibOsRelease string = "/usr/lib/os-release" | ||
|
|
||
| // Read and return os-release, trying EtcOsRelease, followed by UsrLibOsRelease. | ||
| // err will contain an error message if neither file exists or failed to parse | ||
| func Read() (osrelease map[string]string, err error) { | ||
| osrelease, err = ReadFile(EtcOsRelease) | ||
| if err != nil { | ||
| osrelease, err = ReadFile(UsrLibOsRelease) | ||
| } | ||
| return | ||
| } | ||
|
|
||
| // ReadFile Similar to Read(), but takes the name of a file to load instead | ||
| func ReadFile(filename string) (osrelease map[string]string, err error) { | ||
| osrelease = make(map[string]string) | ||
| err = nil | ||
|
|
||
| lines, err := parseFile(filename) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| for _, v := range lines { | ||
| key, value, err := parseLine(v) | ||
| if err == nil { | ||
| osrelease[key] = value | ||
| } | ||
| } | ||
| return | ||
| } | ||
|
|
||
| func parseFile(filename string) (lines []string, err error) { | ||
| file, err := os.Open(filename) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| defer file.Close() | ||
|
|
||
| scanner := bufio.NewScanner(file) | ||
| for scanner.Scan() { | ||
| lines = append(lines, scanner.Text()) | ||
| } | ||
| return lines, scanner.Err() | ||
| } | ||
|
|
||
| func parseLine(line string) (key string, value string, err error) { | ||
| err = nil | ||
|
|
||
| // skip empty lines | ||
| if len(line) == 0 { | ||
| err = errors.New("Skipping: zero-length") | ||
| return | ||
| } | ||
|
|
||
| // skip comments | ||
| if line[0] == '#' { | ||
| err = errors.New("Skipping: comment") | ||
| return | ||
| } | ||
|
|
||
| // try to split string at the first '=' | ||
| splitString := strings.SplitN(line, "=", 2) | ||
| if len(splitString) != 2 { | ||
| err = errors.New("Can not extract key=value") | ||
| return | ||
| } | ||
|
|
||
| // trim white space from key and value | ||
| key = splitString[0] | ||
| key = strings.Trim(key, " ") | ||
| value = splitString[1] | ||
| value = strings.Trim(value, " ") | ||
|
|
||
| // Handle double quotes | ||
| if strings.ContainsAny(value, `"`) { | ||
| first := string(value[0:1]) | ||
| last := string(value[len(value)-1:]) | ||
|
|
||
| if first == last && strings.ContainsAny(first, `"'`) { | ||
| value = strings.TrimPrefix(value, `'`) | ||
| value = strings.TrimPrefix(value, `"`) | ||
| value = strings.TrimSuffix(value, `'`) | ||
| value = strings.TrimSuffix(value, `"`) | ||
| } | ||
| } | ||
|
|
||
| // expand anything else that could be escaped | ||
| value = strings.Replace(value, `\"`, `"`, -1) | ||
| value = strings.Replace(value, `\$`, `$`, -1) | ||
| value = strings.Replace(value, `\\`, `\`, -1) | ||
| value = strings.Replace(value, "\\`", "`", -1) | ||
| return | ||
| } |
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