change formatting

input examples are now given as

```bash
input $ARG1
```

While outputs use md's '> ' sign as a quote.

system/android.md

@@ -8,24 +8,33 @@ tags: [ "Documentation", "System" ]
 
 Install:
 
-> yay -S simple-mtpfs
+```bash
+yay -S simple-mtpfs
+```
 
 List available phones:
 
-> simple-mtpfs -l
+```bash
+simple-mtpfs -l
+```
 
 Make a mount point:
 
-> mkdir phone
+```bash
+mkdir phone
+```
 
 Check your phone, and tell it to allow access to the USB.
 
-> simple-mtpfs --device 1 phone
+```bash
+simple-mtpfs --device 1 phone
+```
 
 ## Stop
 
-> fusermount -u phone
-
+```bash
+fusermount -u phone
 rmdir phone
+```
 
 

system/awk.md

@@ -8,39 +8,55 @@ See a file's contents:
 
 Return full contents of a string:
 
-> awk '{ print }' file
+```bash
+awk '{ print }' file
+```
 
 Print the first and second column:
 
-> awk '{print$1$2}'
+```bash
+awk '{print$1$2}'
+```
 
 Return every line with the word 'the' (like grep):
 
-> awk '/the/{print}' file
+```bash
+awk '/the/{print}' file
+```
 
 Print everything containing a lowercase letter:
 
-> awk '/[a-z]/{print}' file
+```bash
+awk '/[a-z]/{print}' file
+```
 
 Same with numbers [0-9], or using a caret we can show lines starting with a number - ^[0-9], or ending with an uppercase letter - $[A-Z].
 
 # Conditionals
 
-> awk '{ if($1 ~ /123/) print }' file
+```bash
+awk '{ if($1 ~ /123/) print }' file
+```
 
 Check if the first column is equal to 1 or 2 or 3, and if so then print that line.
 
 Grep for 'hawk' in a story:
 
-> awk '/hawk/' story.txt
+```bash
+awk '/hawk/' story.txt
+```
 
 Return any line with one or more "&" sequences:
 
-> awk '/&+/' script.sh
+```bash
+awk '/&+/' script.sh
+```
 
 The pipe is used for 'or', so 'Orcs or drums' would be:
 
-> awk '/Orcs|Drums/' story.txt
+```bash
+awk '/Orcs|Drums/' story.txt
+```
 
 Basic variables are:
 

system/character-encoding.md

@@ -4,7 +4,9 @@ tags: [ "Documentation", "System" ]
 ---
 Convert a text file from one encoding type to another with:
 
-> iconv -f ascii -t utf8 oldfilename > newfilename
+```bash
+iconv -f ascii -t utf8 oldfilename > newfilename
+```
 
 Available options are:
 
@@ -18,5 +20,7 @@ Available options are:
 
 Generate a full list of encoding types available with:
 
-> iconv -l
+```bash
+iconv -l
+```
 

system/compression.md

@@ -1,49 +0,0 @@
----
-title: "compression"
-tags: [ "Documentation", "System" ]
----
-# Tar
-
-## Basics
-
-* --create -c
-
-* --list -t
-
-* --extract --get -x
-
-* --file=file -f file
-
-
-
-
-Look in tar file:
-
-> tar -tf filename.tar.gz
-
-Look in detail:
-
-> tar -tvf filename.tar.gz
-
-# Zip
-
-Zip file:
-
-> zip name.zip file
-
-Zip directory:
-
-> zip -r name.zip dir
-
-Update existing entries.
-
-> zip -ru name.zip dir file1 file2
-
-Delete file from the zipfile.
-
-> zip -d name.zip dfile
-
-# 7z for .img.xz
-
-> 7z x file.img.xz
-

system/default_programs.md

@@ -9,27 +9,37 @@ Install the package `xdg-utils`, then make very liberal use of the tab button.
 
 Ask what type of application opens an mkv file:
 
-> xdg-mime query default video/mkv
+```bash
+xdg-mime query default video/mkv
+```
 
 Same with pdf:
 
-> xdg-mime query default application/pdf
+```bash
+xdg-mime query default application/pdf
+```
 
 Ask what file-type `book.pdf` uses.
 
-> xdg-mime query filetype *book.pdf*
+```bash
+xdg-mime query filetype *book.pdf*
+```
 
 ## Set
 
 Set the mime type of mp4 videos to mpv.
 
-> xdg-mime default mpv.desktop video/mp4
+```bash
+xdg-mime default mpv.desktop video/mp4
+```
 
 You'll need to use the tab key a lot here, and remember many items start with `org`.
 
 You can use an asterisk for everything in a category.
 
-> xdg-mime default org.gnome.font-viewer.desktop font/\*
+```bash
+xdg-mime default org.gnome.font-viewer.desktop font/\*
+```
 
 This often won't work as expected, because some fonts will have the type `application` rather than `font`.
 

system/e-mail.md

@@ -1,51 +0,0 @@
----
-title: "e-mail"
-tags: [ "Documentation", "System" ]
----
-# Terminology
-
-|MTA | Mail transfer agent |
-|POP3| Post Office Protocol 3 |
-|SMTP| Simple Mail Transfer Protocol|
-|IMAP| Internet Message Access Protocol|
-
-There are a number of Linux e-mail agents - postfix, sendmail, exim (insecure) and qmail (dead).  
-
-# Programs
-
-> sudo apt-get install postfix mailutils
-
-This will register your domain in the /etc/postfix/main.cf file.
-
-# Internal Mail
-
-> sendmail -t roach-1
-
-Write a message and stop composition with Ctrl+D.
-
-The mail is kept in /var/mail/ and you can read it with:
-
-> mail
-
-# Aliases
-
-Aliases are groups of mail recipients.  The lists are kept under /etc/aliases.
-
-`crew: matthew@gmail.com,ghost,danial@yahoo.com`
-
-Update the list of aliases from this with:
-
-> sudo newaliases
-
-Then you can:
-
-> sendmail -t crew
-
-... and send to the whole crew.
-
-
-View pending e-mails using:
-
-> mailq
-
-

system/editors.md

@@ -1,5 +1,5 @@
 ---
-title: "editors"
+title: "$EDITOR"
 tags: [ "Documentation", "System" ]
 ---
 The System's default text editor can be defined within /etc/profile.  It's given the variable `EDITOR`.
@@ -16,9 +16,12 @@ export VISUAL=$EDITOR
 
 Then reload that profile with:
 
-> source /etc/profile
+```bash
+source /etc/profile
+```
 
-If nano still pops up:
-
-> sudo ln -sf $(which vim) $(which nano)
+If you want to ensure `nano` never appears again:
 
+```bash
+sudo ln -sf $(which vim) $(which nano)
+```

system/elvish.md

@@ -1,45 +0,0 @@
----
-title: "elvish"
-tags: [ "Documentation", "System" ]
----
-# Setup
-To run a shell as non-root, the shell must be listed in /etc/shells.
-
-# Basics
-Elvish has an inbuilt calculator.
-
-Basic commands include: *, ^, +.  E.g.:
-
-> 2*4+2
-
-
-#Lists
-
-li = [orcs hobbits elves]
-
-Then either
-
-> echo $li
-
-> echo $@li
-
-> echo $path
-
-
-# Environmental Variables
-Summon with E:, e.g.
-
-> echo $E:USER
-
-# Commands
-
-C-n - File manager
-
-C-l - Recent locations
-
-C-r - Recent commands
-
-See all binding with:
-
-> pprint $edit:insert:binding
-

system/exiftool

@@ -1,25 +1,38 @@
-
+---
+title: "exiftool"
+tags: [ "Documentation", "Metadata" ]
+---
 
 Find metadata.
 
-> exiftool image.jpg
+```bash
+exiftool image.jpg
+```
 
 Find info on all images in current directory.
 
-> exiftool -ext .png .
+```bash
+exiftool -ext .png .
+```
 
 You can make this recurring with the -r switch.
 
 And overwrite all metadata:
 
-> exiftool -all= -overwrite_original -ext jpg .
+```bash
+exiftool -all= -overwrite_original -ext jpg .
+```
 
 Or just GPS data:
 
-> exiftool -gps:all= *.jpg
+```bash
+exiftool -gps:all= *.jpg
+```
 
 You can also use the imagemagick tool:
 
-> identify -verbose
+```bash
+identify -verbose
+```
 
 

system/fstab.md

@@ -15,11 +15,9 @@ The ordering of `/etc/fstab` is
 
 E.g.:
 
-```
-UUID=877f14e8-4738-46b0-884f-ba330dad1a7d       /mnt/biggie                     ext4        nofail,rw,relatime      0 2
-
-UUID=B21648C416488AF5 /mnt/share ntfs       nofail,rw,nosuid,nodev,user_id=0,group_id=0,allow_other,blksize=4096 0 0
-```
+> UUID=877f14e8-4738-46b0-884f-ba330dad1a7d       /mnt/biggie                     ext4        nofail,rw,relatime      0 2
+> 
+> UUID=B21648C416488AF5 /mnt/share ntfs       nofail,rw,nosuid,nodev,user_id=0,group_id=0,allow_other,blksize=4096 0 0
 
 ## 5: Dump
 

system/kernel.md

@@ -4,26 +4,38 @@ tags: [ "Documentation", "System" ]
 ---
 Check which kernet modules are loaded into memory
 
-> sudo /sbin/lsmod 
+```bash
+sudo /sbin/lsmod 
+```
 
 Check which virtual box modules are loaded into memory
 
-> sudo /sbin/lsmod | grep vbox 
+```bash
+sudo /sbin/lsmod | grep vbox 
+```
 
 Virtual box is using vboxpci, vboxnetadp, vboxnetflt, vboxdr.
 
 Look at what's claiming wifi:
 
-> sudo lshw -C network
+```bash
+sudo lshw -C network
+```
 
 If this shows that the device is 'unclaimed' then it's time to add a module, e.g. ath9k.
 
-> sudo modprobe ath9k
+```bash
+sudo modprobe ath9k
+```
 
 Modules can also be 'restarted' by removing and adding them, e.g. the video module, 'uvcvideo':
 
-> sudo rmmod uvcvideo
+```bash
+sudo rmmod uvcvideo
+```
 
-> sudo modprobe uvcvideo
+```bash
+sudo modprobe uvcvideo
+```
 
 

system/mdadm.md

@@ -7,7 +7,9 @@ tags: [ "Documentation", "RAID" ]
 You will need 4 disks and the `mdadm` package.
 The total size will be equal to the disks x 3, because one will be used for redundancy.
 
-> sudo mdadm --create --verbose /dev/*md127* --level=5 --raid-devices=*4* */dev/sdb /dev/sdc /dev/sdd /dev/sde*
+```bash
+sudo mdadm --create --verbose /dev/*md127* --level=5 --raid-devices=*4* */dev/sdb /dev/sdc /dev/sdd /dev/sde*
+```
 
 Note the variable parts:
 
@@ -17,17 +19,23 @@ Note the variable parts:
 
 Now look at how the raid status:
 
-> cat /proc/mdstat
+```bash
+cat /proc/mdstat
+```
 
 This will increase until the entire thing is fine.
 
 Check the health of your `mdadm` array:
 
-> sudo mdadm --detail /dev/md127
+```bash
+sudo mdadm --detail /dev/md127
+```
 
 You should see `State : clean`. If you see it is `degraded`, then a disk has broken.
 
 ## Replacing a Disk
 
-> sudo mdadm --add /dev/md127 /dev/sdb1
+```bash
+sudo mdadm --add /dev/md127 /dev/sdb1
+```
 

system/partitions.md

@@ -4,7 +4,9 @@ tags: [ "Documentation", "System" ]
 ---
 # FDisk Basics
 
-> sudo fdisk /dev/sda
+```bash
+sudo fdisk /dev/sda
+```
 
 - m for help.
 
@@ -29,15 +31,21 @@ fdisk will not help with a GPT formatted drive.  For this, use gdisk, which is m
 
 Now that we have a partition, we can make it into a fileSystem.  Most will use:
 
-> sudo mkfs -t ext4 /dev/sdc1
+```bash
+sudo mkfs -t ext4 /dev/sdc1
+```
 
 or if you're making a swap partition, you can use:
 
-> sudo mkswap /dev/sdb2
+```bash
+sudo mkswap /dev/sdb2
+```
 
 or for the reiser fileSystem, we can use:
 
-> sudo mkreiserfs /dev/sdc2
+```bash
+sudo mkreiserfs /dev/sdc2
+```
 
 # File System Types
 
@@ -53,61 +61,87 @@ or for the reiser fileSystem, we can use:
 
 # Parted
 
-> sudo parted /dev/sdb
+```bash
+sudo parted /dev/sdb
+```
 
 
 # Monitoring
 Look at physical and virtual partitions:
 
-> df -h
+```bash
+df -h
+```
 
 or  divide things by inode - the thing which records where files are?
 
-> df -i
+```bash
+df -i
+```
 
 Examine a fileSystem with:
 
-> sudo dumpe2fs /dev/sda1 | less
+```bash
+sudo dumpe2fs /dev/sda1 | less
+```
 
 # Prevention
 There are multiple programs which work mostly the same way.
 
-> sudo tune2fs -c 30 /dev/sda1
+```bash
+sudo tune2fs -c 30 /dev/sda1
+```
 
 This will check sda1 every 30 boots.  It can also be checked every month.
 
-> sudo tune2fs -i 1m /dev/sda1
+```bash
+sudo tune2fs -i 1m /dev/sda1
+```
 
 This thing can also make a new label for the System:
 
-> sudo tune2fs -L new_name /dev/sdb3
+```bash
+sudo tune2fs -L new_name /dev/sdb3
+```
 
 # Repair
 Start by unmounting the fileSystem.
 
-> sudo umount /dev/sdc1
+```bash
+sudo umount /dev/sdc1
+```
 
 Then it's time to check. 
 
-> sudo fsck /dev/sdc1
+```bash
+sudo fsck /dev/sdc1
+```
 
 And possibly repair damage:
 
-> e2fsck -p /dev/sdc1
+```bash
+e2fsck -p /dev/sdc1
+```
 
 
 or the same with:
 
-> sudo debugfs /dev/sdc1
+```bash
+sudo debugfs /dev/sdc1
+```
 
 # Mounting
 You can mount with a specified filetype with:
 
-> sudo mount -t ext3 /dev/sdc2 /mnt/stick
+```bash
+sudo mount -t ext3 /dev/sdc2 /mnt/stick
+```
 
 or if you don't know the type, just try the lot:
 
-> sudo mount -a /dev/sdc1 /mnt/stick
+```bash
+sudo mount -a /dev/sdc1 /mnt/stick
+```
 
 # File Systems
 xfs and zfs can only be expanded.
@@ -118,21 +152,31 @@ NB: When I followed these instructions, the process destroyed my data. Seemed fi
 
 Check the fileSystem's health:
 
-> sudo e2fsck -f /dev/sdb1
+```bash
+sudo e2fsck -f /dev/sdb1
+```
 
 Resize the file System to something smaller than what you want, so here I want 500G and so I resize to 450 G.
 
-> resize2fs /dev/sdb1 450G
+```bash
+resize2fs /dev/sdb1 450G
+```
 
 Then delete the partition with either gdisk or fdisk, depending upon the layout.
 
-> sudo fdisk /dev/sdb
+```bash
+sudo fdisk /dev/sdb
+```
 
-> d
+```bash
+d
+```
 
 Then make a new fileSystem of the desired type with:
 
-> n
+```bash
+n
+```
 
 And finally resize to the full size you want:
 
@@ -149,14 +193,20 @@ Let's start with names.  PV = 'Physical Volume', VG = 'Volume Group', and LV = '
 
 Now we can create a volume group out of sdb2 and sdc3:
 
-> sudo vgcreate my-new-vg /dev/sdb2 /dev/sdc3
+```bash
+sudo vgcreate my-new-vg /dev/sdb2 /dev/sdc3
+```
 
 Then make a new logical volume out of the volume group:
 
-> sudo lvcreate -n my-new-lv my-new-vg
+```bash
+sudo lvcreate -n my-new-lv my-new-vg
+```
 
 Then have a look at all logical volumes:
 
-> sudo lvscan
+```bash
+sudo lvscan
+```
 
 

system/swap.md

@@ -4,44 +4,66 @@ tags: [ "Documentation", "basics" ]
 ---
 # Making a Swap File
 
-> cd /var/cache/
+```bash
+cd /var/cache/
+```
 
-> sudo dd if=/dev/zero of=swapfile bs=1K count=4M
+```bash
+sudo dd if=/dev/zero of=swapfile bs=1K count=4M
+```
 
 This creates a swapfile of (1k x 4M) 4 Gigs.
 Change 4M to XM for an XGig swap.
 
-> sudo chmod 600 swapfile
+```bash
+sudo chmod 600 swapfile
+```
 
-> sudo mkswap swapfile
+```bash
+sudo mkswap swapfile
+```
 
-> sudo swapon swapfile
+```bash
+sudo swapon swapfile
+```
 
 Test it's working with top
 
-> top -bn1 | grep -i swap
+```bash
+top -bn1 | grep -i swap
+```
 
 or:
 
-> echo "/var/cache/swapfile none swap sw 0 0" | sudo tee -a /etc/fstab
+```bash
+echo "/var/cache/swapfile none swap sw 0 0" | sudo tee -a /etc/fstab
+```
 
 Test it'll work at boot with:
 
-> sudo swapoff swapfile
+```bash
+sudo swapoff swapfile
+```
 
-> sudo swapon -va
+```bash
+sudo swapon -va
+```
 
 # Partition Swaps
 
 Put this in /etc/fstab:
 
-`UUID=blah-blah none swap sw 0 0`
+> UUID=blah-blah none swap sw 0 0
 
 Then test it works with:
 
-> sudo swapon -va
+```bash
+sudo swapon -va
+```
 
 Test other partitions in fstab with:
 
-> sudo mount -a
+```bash
+sudo mount -a
+```
 

system/systemd/journal.md

@@ -2,11 +2,15 @@
 title: "journal"
 tags: [ "Documentation", "systemd" ]
 ---
+```
 
 Find errors since November
 
-> journalctl --since=2018-11-01 --grep="EXT4-fs error"
+```bash
+journalctl --since=2018-11-01 --grep="EXT4-fs error"
+```
 
 Limit size to 2G.
 
-> journalctl --vacuum-size=2G
+```bash
+journalctl --vacuum-size=2G

system/systemd/making-services.md

@@ -26,13 +26,12 @@ WantedBy=multi-user.target
 
 After making the new service, systemd requires reloading:
 
-> sudo systemctl daemon-reload
+```bash
+sudo systemctl daemon-reload
+```
 
 # Types
 
 * simple - the service cannot be called on by others.  It runs on repeat.
-
 * oneshot - the service executes once, then stops.
 
-
-

system/systemd/systemd_basics.md

@@ -2,19 +2,33 @@
 title: "systemd"
 tags: [ "Documentation", "systemd" ]
 ---
-> systemctl list-units
+```bash
+systemctl list-units
+```
 
-> sudo systemctl status mpd
+```bash
+sudo systemctl status mpd
+```
 
-> sudo systemctl daemon-reload
+```bash
+sudo systemctl daemon-reload
+```
 
-> sudo systemctl taskd.service start
+```bash
+sudo systemctl taskd.service start
+```
 
-> sudo systemctl status taskd.service
+```bash
+sudo systemctl status taskd.service
+```
 
 # Startup
 
-> sudo systemd-analyze
+```bash
+sudo systemd-analyze
+```
 
-> sudo systemd-analyze blame
+```bash
+sudo systemd-analyze blame
+```
 

system/tmux.md

@@ -4,7 +4,9 @@ tags: [ "Documentation", "System" ]
 ---
 Start with:
 
-> tmux
+```bash
+tmux
+```
 
 Input a command with C-b
 
@@ -32,15 +34,23 @@ In addition to Windows, there are panes.
 
 Crate a new session with the name 'backup'.
 
-> tmux new -s backup
+```bash
+tmux new -s backup
+```
 
 List sessions:
 
-> tmux list-sessions
+```bash
+tmux list-sessions
+```
 
-> tmux kill-session -t 2
+```bash
+tmux kill-session -t 2
+```
 
-> tmux attach -t backup
+```bash
+tmux attach -t backup
+```
 
 
 # Control

system/urxvt.md

@@ -1,5 +0,0 @@
----
-title: "urxvt"
-tags: [ "Documentation", "System" ]
----
-Perl scripts typically kept in /usr/lib/urxvt/perl

system/vncserver

@@ -6,11 +6,15 @@ https://linuxconfig.org/vnc-server-on-ubuntu-18-04-bionic-beaver-linux
 
 Enable remote desktop access.
 
-> sudo apt install vnc4server xfce4 xfce4-goodies
+```bash
+sudo apt install vnc4server xfce4 xfce4-goodies
+```
 
 Disable the vncserver desktop:
 
-> vncserver -kill :1
+```bash
+vncserver -kill :1
+```
 
 Replace the config in ~/.vnc/xstartup with:
 
@@ -22,43 +26,49 @@ Replace the config in ~/.vnc/xstartup with:
 
 Install tigervnc, then run it to set a password:
 
-> vncserver
+```bash
+vncserver
+```
 
 You'll get a session number.
 
 Shut it down with the 'kill' command and the session's number:
 
-> vncserver -kill :1
+```bash
+vncserver -kill :1
+```
 
 This will forward over port 5900+x where x is the session number.  For the first server, that's port 5901.
 
 # Create a systemd service
 
-> sudo vim /etc/systemd/system/vncserver@:1.service
+```bash
+sudo vim /etc/systemd/system/vncserver@:1.service
+```
 
 Then enter:
 
-```
-[Unit]
-Description=Remote desktop service (VNC)
-After=syslog.target network.target
-
-[Service]
-Type=simple
-User=foo
-PAMName=login
-PIDFile=/home/%u/.vnc/%H%i.pid
-ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
-ExecStart=/usr/bin/vncserver %i -geometry 1440x900 -alwaysshared -fg
-ExecStop=/usr/bin/vncserver -kill %i
-
-[Install]
-WantedBy=multi-user.target
-```
+> [Unit]
+> Description=Remote desktop service (VNC)
+> After=syslog.target network.target
+> 
+> [Service]
+> Type=simple
+> User=foo
+> PAMName=login
+> PIDFile=/home/%u/.vnc/%H%i.pid
+> ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
+> ExecStart=/usr/bin/vncserver %i -geometry 1440x900 -alwaysshared -fg
+> ExecStop=/usr/bin/vncserver -kill %i
+> 
+> [Install]
+> WantedBy=multi-user.target
 
 Then enable that service:
 
-> sudo systemctl start vncserver@:1.service
+```bash
+sudo systemctl start vncserver@:1.service
+```