Autosave: 2025-02-10 20:44:53

neuron/acc60df2-7719-47eb-91e2-341f930a4aea/Disk_size_utilities.md

@@ -0,0 +1,22 @@
+---
+tags: [procedural, linux]
+created: Monday, February 10, 2025
+---
+
+# Disk size utilities
+
+## Compare size of two directories in human-readable format
+
+```sh
+du -sh /dir_one /dir_two
+```
+
+## View total capacity and space used
+
+```sh
+df -h /media/samsung-T7 # add more to compare if you like
+
+# Filesystem              Size  Used Avail Use% Mounted on
+# /dev/mapper/samsung-T7  916G   67G  850G   8% /media/samsung-T7
+
+```

neuron/acc60df2-7719-47eb-91e2-341f930a4aea/Setup encrypted harddrive.md

@@ -0,0 +1,87 @@
+---
+tags: [procedural, disks, encryption]
+created: Monday, February 10, 2025
+---
+
+# Setup an encrypted harddrive
+
+Firstly [create a new partition](Linux_disk_partitions.md) on the unencrypted
+drive.
+
+Create LUKs encryption:
+
+```sh
+sudo cryptsetup luksFormat /dev/sdX
+```
+
+Enter password when prompted.
+
+Open the encrypted drive with the name you want to use henceforth:
+
+```sh
+sudo cryptsetup luksOpen /dev/sdX my_device_name
+```
+
+Create filesystem:
+
+```sh
+sudo mkfs.ext4 /dev/mapper/my_device_name
+```
+
+Set mount point:
+
+```sh
+sudo mkdir -p /media/my_device_name
+```
+
+Mount:
+
+```sh
+sudo mount /dev/mapper/my_device_name /media/my_device_name
+```
+
+Add it to the crypttab:
+
+```sh
+vim /etc/crypttab
+```
+
+Get UUID for device with:
+
+```
+sudo blkid /dev/sdx
+```
+
+Add entry:
+
+```txt
+my_device_name UUID="ae028027-20c5-40b6-9311-11f5a886f125" none noauto
+```
+
+Then add it as a lint in the fstab for auto-mount:
+
+```sh
+/dev/mapper/my_device_name /media/my_device_name ext4 defaults,nofail,noauto,user 0 2
+```
+
+Give yourself full permissions (set once, then permanent):
+
+```sh
+sudo chown thomas:thomas /meda/my_device_name
+sudo chmod 755 /media/my_device_name
+```
+
+Test auto-mount and loading from crypttab:
+
+First reload `systemd`:
+
+`sh sudo systemctl daemon-reload `
+
+Then, remount all disks.
+
+```sh
+sudo mount -a
+```
+
+Should be prompted for password and disk decrypts and mounts to specified mount
+point.

neuron/acc60df2-7719-47eb-91e2-341f930a4aea/index.md

@@ -13,12 +13,14 @@ computer science.
 
 <a href="https://thomasabishop.github.io/eolas/tags">View tags</a>
  
-**Build ID:** f8981ab1-f587-4bd7-a1a8-aa934a221168
+**Build ID:** acc60df2-7719-47eb-91e2-341f930a4aea
 
-**Published:** Mon 10 Feb 2025 17:14:06
+**Published:** Mon 10 Feb 2025 20:44:49
 
 ### Recent edits 
 
+- [[Disk_size_utilities]] 
+- [[Setup encrypted harddrive]] 
 - [[Firewalls]] 
 - [[Let's_Encrypt]] 
 - [[Certificate_authorities]] 
@@ -29,11 +31,9 @@ computer science.
 - [[LineageOS_backup]] 
 - [[4dec6fe0_shadow_text]] 
 - [[c9d7492f_requerimiento]] 
-- [[Compile_Python_app_to_single_executable]] 
-- [[Sorting_lists_in_Python]] 
 
 
-### All notes (526) 
+### All notes (528) 
 
 - [[0716531c_rewilding_the_internet]] 
 - [[241fe1a3_the_Web_versus_modem_BBSs]] 
@@ -177,6 +177,7 @@ computer science.
 - [[Disjunction_Elimination]] 
 - [[Disjunction_Introduction]] 
 - [[Disk_info]] 
+- [[Disk_size_utilities]] 
 - [[Distributivity]] 
 - [[Dividing_fractions]] 
 - [[Docker_CLI]] 
@@ -436,6 +437,7 @@ computer science.
 - [[Set_DNS_settings]] 
 - [[Sets_in_Python]] 
 - [[Setting_up_and_configuring_TypeScript]] 
+- [[Setup encrypted harddrive]] 
 - [[Shell_sessions]] 
 - [[Signed_and_unsigned_numbers]] 
 - [[Signed_magnitude_representation]] 

neuron/acc60df2-7719-47eb-91e2-341f930a4aea/tags.md

@@ -302,6 +302,7 @@ unlisted: true
 - [[Disk_info]] 
 - [[Filesystems]] 
 - [[Linux_disk_partitions]] 
+- [[Setup encrypted harddrive]] 
 - [[Swap_space]] 
 - [[What_are_disks]] 
 ### docker 
@@ -369,6 +370,7 @@ unlisted: true
 - [[bbdcb54f_public_key_cryptography]] 
 - [[HTTPS]] 
 - [[Let's_Encrypt]] 
+- [[Setup encrypted harddrive]] 
 - [[What_can_the_ISP_see]] 
 ### exponents 
 
@@ -532,6 +534,7 @@ unlisted: true
 - [[VirtualMemory]] 
 ### linux 
 
+- [[Disk_size_utilities]] 
 - [[LineageOS_backup]] 
 ### literature 
 
@@ -840,6 +843,7 @@ unlisted: true
 - [[Create_timed_systemd_job]] 
 - [[Cron]] 
 - [[Disk_info]] 
+- [[Disk_size_utilities]] 
 - [[Effective_logging_in_Git]] 
 - [[File_operations_in_Python]] 
 - [[File_system_error_handling_in_Python]] 
@@ -858,6 +862,7 @@ unlisted: true
 - [[Rename_a_branch]] 
 - [[Reset_to_remote_version]] 
 - [[Save_readonly_Vim_file]] 
+- [[Setup encrypted harddrive]] 
 - [[Symlinks]] 
 - [[systemd]] 
 - [[systemd_status]] 

zk/Disk_size_utilities.md

@@ -0,0 +1,22 @@
+---
+tags: [procedural, linux]
+created: Monday, February 10, 2025
+---
+
+# Disk size utilities
+
+## Compare size of two directories in human-readable format
+
+```sh
+du -sh /dir_one /dir_two
+```
+
+## View total capacity and space used
+
+```sh
+df -h /media/samsung-T7 # add more to compare if you like
+
+# Filesystem              Size  Used Avail Use% Mounted on
+# /dev/mapper/samsung-T7  916G   67G  850G   8% /media/samsung-T7
+
+```

zk/Setup encrypted harddrive.md

@@ -0,0 +1,87 @@
+---
+tags: [procedural, disks, encryption]
+created: Monday, February 10, 2025
+---
+
+# Setup an encrypted harddrive
+
+Firstly [create a new partition](./Linux_disk_partitions.md) on the unencrypted
+drive.
+
+Create LUKs encryption:
+
+```sh
+sudo cryptsetup luksFormat /dev/sdX
+```
+
+Enter password when prompted.
+
+Open the encrypted drive with the name you want to use henceforth:
+
+```sh
+sudo cryptsetup luksOpen /dev/sdX my_device_name
+```
+
+Create filesystem:
+
+```sh
+sudo mkfs.ext4 /dev/mapper/my_device_name
+```
+
+Set mount point:
+
+```sh
+sudo mkdir -p /media/my_device_name
+```
+
+Mount:
+
+```sh
+sudo mount /dev/mapper/my_device_name /media/my_device_name
+```
+
+Add it to the crypttab:
+
+```sh
+vim /etc/crypttab
+```
+
+Get UUID for device with:
+
+```
+sudo blkid /dev/sdx
+```
+
+Add entry:
+
+```txt
+my_device_name UUID="ae028027-20c5-40b6-9311-11f5a886f125" none noauto
+```
+
+Then add it as a lint in the fstab for auto-mount:
+
+```sh
+/dev/mapper/my_device_name /media/my_device_name ext4 defaults,nofail,noauto,user 0 2
+```
+
+Give yourself full permissions (set once, then permanent):
+
+```sh
+sudo chown thomas:thomas /meda/my_device_name
+sudo chmod 755 /media/my_device_name
+```
+
+Test auto-mount and loading from crypttab:
+
+First reload `systemd`:
+
+`sh sudo systemctl daemon-reload `
+
+Then, remount all disks.
+
+```sh
+sudo mount -a
+```
+
+Should be prompted for password and disk decrypts and mounts to specified mount
+point.