Заметки Linux

Explain Shell

https://explainshell.com/explain?cmd=curl+-fsSL+example.org

Как рекурсивно изменить все права на директорию ?

sudo chmod -R ugo+rw /DATA/SHARE

chmod – the command to modify permissions
-R – this modifies the permission of the parent folder and the child objects within
ugo+rw – this gives User, Group, and Other read and write access.

Добавить пользователя user в группу supergroup:

usermod -a -G supergroup user

Отличный просмотрщик использования дисков ncdu

sudo apt update

sudo apt install ncdu

пример использования

ncdu .

Получить список файлов по дате создания с абсолютными путями 

find "$PWD" -type f -newermt "2020-02-10 17:55:00" ! -newermt "2020-02-10 18:30:00" -ls

Full details from man find:

   -newerXY reference
          Compares the timestamp of the current file with reference.  The reference argument is normally the name of a file (and one of its timestamps  is  used
          for  the  comparison)  but  it may also be a string describing an absolute time.  X and Y are placeholders for other letters, and these letters select
          which time belonging to how reference is used for the comparison.

          a   The access time of the file reference
          B   The birth time of the file reference
          c   The inode status change time of reference
          m   The modification time of the file reference
          t   reference is interpreted directly as a time

          Some combinations are invalid; for example, it is invalid for X to be t.  Some combinations are not implemented on all systems; for example B  is  not
          supported on all systems.  If an invalid or unsupported combination of XY is specified, a fatal error results.  Time specifications are interpreted as
          for the argument to the -d option of GNU date.  If you try to use the birth time of a reference file, and the birth time cannot be determined, a fatal
          error  message  results.   If  you  specify a test which refers to the birth time of files being examined, this test will fail for any files where the
          birth time is unknown.
 

КАК СМЕНИТЬ ПАРОЛЬ ДРУГОГО ПОЛЬЗОВАТЕЛЯ

passwd user

Тотальная переустановка пакета

• How To Fix Sub-Process /Usr/Bin/Dpkg Returned An Error Code (1) In Ubuntu https://phoenixnap.com/kb/fix-sub-process-usr-bin-dpkg-returned-error-code-1
• dpkg: warning: files list file for package 'x' missing https://serverfault.com/questions/430682/dpkg-warning-files-list-file-for-package-x-missing

Правильное удаление SWAP файлов

1. First, deactivate the swap by typing:

   sudo swapoff -v /swapfileCopy

2. Remove the swap file entry /swapfile swap swap defaults 0 0 from the /etc/fstab file.

3. Finally, delete the actual swapfile file using the rm command:

   sudo rm /swapfile