60 lines
1.1 KiB
Go
60 lines
1.1 KiB
Go
package setup
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import (
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"bufio"
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"fmt"
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"strings"
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log "github.com/sirupsen/logrus"
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)
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// systemdUnitList returns all enabled systemd units.
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// It needs to parse the table because -o json does not work everywhere.
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func systemdUnitList() ([]string, error) {
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wrap := func(err error) error {
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return fmt.Errorf("running systemctl: %w", err)
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}
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ret := make([]string, 0)
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cmd := ExecCommand("systemctl", "list-unit-files", "--state=enabled,generated,static")
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stdout, err := cmd.StdoutPipe()
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if err != nil {
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return ret, wrap(err)
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}
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log.Debugf("Running systemctl...")
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if err := cmd.Start(); err != nil {
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return ret, wrap(err)
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}
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scanner := bufio.NewScanner(stdout)
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header := true // skip the first line
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for scanner.Scan() {
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line := scanner.Text()
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if len(line) == 0 {
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break // the rest of the output is footer
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}
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if !header {
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spaceIdx := strings.IndexRune(line, ' ')
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if spaceIdx == -1 {
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return ret, fmt.Errorf("can't parse systemctl output")
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}
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line = line[:spaceIdx]
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ret = append(ret, line)
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}
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header = false
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}
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if err := cmd.Wait(); err != nil {
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return ret, wrap(err)
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}
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return ret, nil
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}
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