Merge branch 'dev' into vhs
This commit is contained in:
commit
3457ed4c61
GPG Key ID:
52295D2377F4D70F
12
basics/Joyous_ASCII.md
Normal file
12
basics/Joyous_ASCII.md
Normal file
@ -0,0 +1,12 @@
|
||||
---
|
||||
title: "Joyous ASCII"
|
||||
tags: [ "fun" ]
|
||||
---
|
||||
|
||||
- `asciiquarium`
|
||||
- `cbonsai -lim "$(fortune)"`
|
||||
|
||||
```bash
|
||||
cow=$(cowsay -l | sort -R | head -1)
|
||||
fortune -s | figlet | cowsay -nf $cow | lolcat
|
||||
```
|
||||
114
basics/cron.md
114
basics/cron.md
@ -2,9 +2,11 @@
|
||||
title: "cron"
|
||||
tags: [ "Documentation", "Basics" ]
|
||||
---
|
||||
# Cron
|
||||
# Cronie
|
||||
|
||||
The crontab program might have various names, like `cronie` or `crond`.
|
||||
The `cronie` program is also known as `crond`.
|
||||
|
||||
## Install
|
||||
|
||||
```bash
|
||||
sudo apt search -n ^cron
|
||||
@ -17,29 +19,33 @@ sudo systemctl list-unit-files | grep cron
|
||||
sudo systemctl enable --now $NAME
|
||||
```
|
||||
|
||||
Make a file for your crontab, like this:
|
||||
## Usage
|
||||
|
||||
Show your current crontab:
|
||||
|
||||
```bash
|
||||
echo '39 */3 * * * /usr/bin/updatedb' > "$USER".cron
|
||||
crontab -l
|
||||
```
|
||||
|
||||
You can put this in a file and edit it:
|
||||
|
||||
```bash
|
||||
crontab -l > $filename
|
||||
echo '39 3 */3 * * /bin/tar czf /tmp/etc_backup.tgz /etc/' >> $filename
|
||||
```
|
||||
|
||||
Then apply that crontab:
|
||||
|
||||
```bash
|
||||
crontab "$USER".cron
|
||||
rm "$USER".cron
|
||||
crontab $filename
|
||||
rm $filename
|
||||
```
|
||||
|
||||
The `cron` program will check your syntax before adding the tab.
|
||||
|
||||
Your crontab file sits somewhere in `/var/spool/`.
|
||||
Probably in `/var/spool/cron`.
|
||||
|
||||
Check how your tab currently looks:
|
||||
|
||||
```bash
|
||||
crontab -l
|
||||
```
|
||||
|
||||
## Syntax
|
||||
|
||||
`* * * * *`
|
||||
@ -50,43 +56,61 @@ These five points refer to:
|
||||
|
||||
So '3pm every Sunday' would be:
|
||||
|
||||
> 0 15 * * 7
|
||||
`0 15 * * 7`
|
||||
|
||||
Here 'Sunday' is indicated by "7", and '3pm' is 'the 15th hour'.
|
||||
The minute is '0' (i.e. '0 minutes past three pm').
|
||||
|
||||
Doing the same thing, but only in February, would be:
|
||||
|
||||
> 0 15 * 2 7
|
||||
`0 15 * 2 7`
|
||||
|
||||
### Full Paths
|
||||
### Variables
|
||||
|
||||
`cronie` doesn't know where you live, so to put something in your `$HOME` directory, you have to tell it:
|
||||
|
||||
Executing something requires the full path to where it is, so you cannot simply use `apt update -y`, because cron does not know where `apt` is.
|
||||
Instead, find out where it is:
|
||||
|
||||
```bash
|
||||
type -P apt
|
||||
echo "HOME=$HOME" > $filename
|
||||
crontab -l >> $filename
|
||||
crontab $filename
|
||||
```
|
||||
|
||||
`/usr/bin/apt`
|
||||
`cronie` doesn't know where anything lives, including programs.
|
||||
You can give it your usual `$PATH` variable like this:
|
||||
|
||||
Then put that into the crontab:
|
||||
|
||||
```bash
|
||||
sudo crontab -e
|
||||
echo $PATH > $filename
|
||||
crontab -l >> $filename
|
||||
crontab $filename
|
||||
```
|
||||
|
||||
> 40 */3 * * * /usr/bin/apt update -y
|
||||
Now instead of doing this
|
||||
|
||||
This will run `apt update -y` as root every 3 hours, at 40 minutes past the hour, e.g. 00:40, 03:40, 06:40.
|
||||
`40 */3 * * * /usr/bin/du -sh $HOME/* | sort -h > $HOME/sum.txt`
|
||||
|
||||
## Directories
|
||||
You can simply do this:
|
||||
|
||||
`40 */3 * * * du -sh $HOME/* | sort -h > $HOME/sum.txt`
|
||||
|
||||
## Run as Root
|
||||
|
||||
You can execute a script as root by putting it into a directory, instead of in the tab.
|
||||
Look at the available cron directories:
|
||||
|
||||
```bash
|
||||
ls /etc/cron.\*
|
||||
ls -d /etc/cron.*
|
||||
```
|
||||
|
||||
Make a script which runs daily:
|
||||
|
||||
```bash
|
||||
f=apt_update.sh
|
||||
echo '#!/bin/bash' > $f
|
||||
echo 'apt update --yes' >> $f
|
||||
chmod +x $f
|
||||
sudo mv $f /etc/cron.daily/
|
||||
```
|
||||
|
||||
### Testing with runparts
|
||||
@ -97,47 +121,9 @@ Run-parts runs all executable scripts in a directory.
|
||||
run-parts /etc/cron.hourly
|
||||
```
|
||||
|
||||
## Tips
|
||||
|
||||
### Variables
|
||||
|
||||
Add your `$HOME` to crontab to use scripts.
|
||||
First add `HOME=/home/$USER`, then you can use syntax like this:
|
||||
|
||||
0 * * * * $HOME/.scripts/myScript.sh
|
||||
|
||||
*Remember to test the script by executing that line first*:
|
||||
|
||||
```bash
|
||||
$HOME/.scripts/myScript.sh
|
||||
```
|
||||
You can also add your regular path to your crontab as a variable (see example below).
|
||||
If you're using vim as the editor, just run this at the top of your crontab:
|
||||
|
||||
```bash
|
||||
:r!echo PATH=$PATH
|
||||
```
|
||||
# Troubleshooting
|
||||
|
||||
### `date` Commands
|
||||
|
||||
Cron doesn't understand the `%` sign, so if you want to use `date +%R`, then it should be escaped with a backslash: `date +\%R`.
|
||||
|
||||
### File Location
|
||||
|
||||
The crontab files are in `/var/spool/cron/`, so you can backup or restore them.
|
||||
|
||||
# Example
|
||||
|
||||
```
|
||||
HOME=/home/user
|
||||
PATH=/usr/condabin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/home/user/.local/bin:/home/user/.scripts/:/home/user/.local/bin:/home/user/.scripts/
|
||||
|
||||
1 0 1 * * /usr/bin/mkdir -p $HOME/arc/$(date +\%Y/\%m)
|
||||
|
||||
18 0 1 */3 * $HOME/.scripts/mail-clean.sh
|
||||
|
||||
* * * * * ping -c 1 home || mail-pull.sh
|
||||
|
||||
50 18 * * * /usr/bin/timeout 30m /usr/bin/syncthing
|
||||
|
||||
```
|
||||
|
||||
@ -92,7 +92,7 @@ A branch is a full copy of the project to test additional ideas.
|
||||
You can make a new branch called 'featurez' like this:
|
||||
|
||||
```bash
|
||||
git branch *featurez*
|
||||
git branch $FEATURE_BRANCH
|
||||
```
|
||||
|
||||
Have a look at all your branches:
|
||||
@ -104,19 +104,20 @@ git branch
|
||||
Switch to your new branch:
|
||||
|
||||
```bash
|
||||
git checkout *featurez*
|
||||
git checkout $FEATURE_BRANCH
|
||||
```
|
||||
|
||||
And if your changes are rubbish, checkout the "master" branch again, then delete "featurez":
|
||||
|
||||
```bash
|
||||
git branch -D *featurez*
|
||||
git branch -D $FEATURE_BRANCH
|
||||
```
|
||||
|
||||
Or if it's a good branch, push it to the remote:
|
||||
|
||||
```bash
|
||||
git push *origin* *featurez*
|
||||
remote=origin
|
||||
git push $remote $FEATURE_BRANCH
|
||||
```
|
||||
|
||||
## Merging
|
||||
@ -124,13 +125,13 @@ git push *origin* *featurez*
|
||||
Once you like the feature, merge it into the main branch. Switch to master then merge it:
|
||||
|
||||
```bash
|
||||
git merge *featurez*
|
||||
git merge $FEATURE_BRANCH
|
||||
```
|
||||
|
||||
and delete `featurez` as you've already merged it:
|
||||
And delete the branch, as you've already merged it:
|
||||
|
||||
```bash
|
||||
git branch -d featurez
|
||||
git branch -d $FEATURE_BRANCH
|
||||
```
|
||||
|
||||
# Subtree
|
||||
@ -141,34 +142,6 @@ git branch -d featurez
|
||||
git subtree add -P config git@gitlab.com:bindrpg/config.git master
|
||||
```
|
||||
|
||||
## Pulling a Subtree from an existing git
|
||||
|
||||
The project has subdirectories sub-1,sub-2,sub-3. The first should be its own repository, but should also retain its own history.
|
||||
|
||||
First, we extract its history as an independent item, and make that into a seprate branch.
|
||||
|
||||
```bash
|
||||
git subtree split --prefix=sub-1 -b sub
|
||||
```
|
||||
|
||||
If you want something a few directories deep, you can use `--prefix=sub-1/dir-2/dir-3
|
||||
|
||||
Then go and create a new git somewhere else:
|
||||
|
||||
```bash
|
||||
cd ..;mkdir sub-1;cd sub-1;git init --bare
|
||||
```
|
||||
|
||||
Then go back to your initial git repo, and do the following:
|
||||
|
||||
git push ../subtest sub:master
|
||||
|
||||
Finally, you can clone this repo from your original.
|
||||
|
||||
```bash
|
||||
git clone ../subtest
|
||||
```
|
||||
|
||||
# Tricks
|
||||
|
||||
## Delete All History
|
||||
|
||||
9
data/git/git_secret.md
Normal file
9
data/git/git_secret.md
Normal file
@ -0,0 +1,9 @@
|
||||
---
|
||||
title: "git secret"
|
||||
tags: [ "data", "git" ]
|
||||
---
|
||||
|
||||
This utility is largely useless, as it can only identify people by their email.
|
||||
So if someone has multiple GPG keys associated with one email, the tool will not work.
|
||||
|
||||
Worse than not working, it may 'suddenly' stop working as you try to transfer a secret to someone, who then discovers that `git-secret` requires them to mess about with their GPG keyring in order to use the repository.
|
||||
34
data/git/subtree.md
Normal file
34
data/git/subtree.md
Normal file
@ -0,0 +1,34 @@
|
||||
---
|
||||
title: "git"
|
||||
tags: [ "Documentation", "data", "git", "subtree" ]
|
||||
---
|
||||
|
||||
## Pulling a Subtree from an existing git
|
||||
|
||||
The project has subdirectories `sub-1`, `sub-2`, `sub-3`.
|
||||
The first should be its own repository, but should also retain its own history.
|
||||
|
||||
First, we extract its history as an independent item, and make that into a seprate branch.
|
||||
|
||||
```bash
|
||||
git subtree split --prefix=sub-1 -b sub
|
||||
```
|
||||
|
||||
If you want something a few directories deep, you can use `--prefix=sub-1/dir-2/dir-3
|
||||
|
||||
Then go and create a new git somewhere else:
|
||||
|
||||
```bash
|
||||
cd ..;mkdir sub-1;cd sub-1;git init --bare
|
||||
```
|
||||
|
||||
Then go back to your initial git repo, and do the following:
|
||||
|
||||
git push ../subtest sub:master
|
||||
|
||||
Finally, you can clone this repo from your original.
|
||||
|
||||
```bash
|
||||
git clone ../subtest
|
||||
```
|
||||
|
||||
@ -1,10 +1,47 @@
|
||||
---
|
||||
title: "sc-im"
|
||||
tags: [ "Documentation", "data" ]
|
||||
tags: [ "Documentation", "TUI", "data" ]
|
||||
---
|
||||
# Edit
|
||||
|
||||
## Text
|
||||
- [Sample file](sc-im/sample.sc)
|
||||
|
||||
# Basic Commands
|
||||
|
||||
## See Cells
|
||||
|
||||
Cells are hard to see.
|
||||
Change this with `:set autowrap`.
|
||||
|
||||
Make `sc-im` always autowrap:
|
||||
|
||||
```bash
|
||||
mkdir .config/sc-im/bash
|
||||
echo 'set autowrap' >> .config/sc-im/scimrc
|
||||
```
|
||||
|
||||
## Movement
|
||||
|
||||
| Command | Key |
|
||||
|:------------------------------------|:---:|
|
||||
| highest part | H |
|
||||
| lowest part | L |
|
||||
| top | gg |
|
||||
| most right. | g$ |
|
||||
| most left. | g0 |
|
||||
| insert middle | \ |
|
||||
| insert left | \> |
|
||||
| insert right | < |
|
||||
| to to cell b4 | gb4 |
|
||||
| see all text in cells | aa |
|
||||
| format cells so you can see it. | f |
|
||||
| format wider right | fl |
|
||||
| format smaller left | fh |
|
||||
| format wider down | fj |
|
||||
| format smaller down | fk |
|
||||
|
||||
## Edit
|
||||
|
||||
### Text
|
||||
|
||||
| Action | Key |
|
||||
|:----------------------|:---:|
|
||||
@ -13,7 +50,7 @@ tags: [ "Documentation", "data" ]
|
||||
| text (right align) | `|` |
|
||||
| Edit existing text | E |
|
||||
|
||||
## Meta Actions
|
||||
### Meta Actions
|
||||
|
||||
| Action | Key |
|
||||
|:----------------------|:---:|
|
||||
@ -46,7 +83,7 @@ tags: [ "Documentation", "data" ]
|
||||
| format smaller down | fk |
|
||||
|
||||
|
||||
## Functions
|
||||
### Functions
|
||||
|
||||
| Action | Key |
|
||||
|:--------------------------------|:------------:|
|
||||
@ -56,7 +93,7 @@ tags: [ "Documentation", "data" ]
|
||||
| minimumof those numbers | =@min(B1:B8) |
|
||||
| multiply C1 to C8 | =@prod(C1:C8)|
|
||||
|
||||
## Visual
|
||||
### Visual
|
||||
|
||||
| Action | Key |
|
||||
|:--------------------------------|:------------:|
|
||||
|
||||
38
data/sc-im/sample.sc
Normal file
38
data/sc-im/sample.sc
Normal file
@ -0,0 +1,38 @@
|
||||
# This data file was generated by the Spreadsheet Calculator Improvised (sc-im)
|
||||
# You almost certainly shouldn't edit it.
|
||||
|
||||
newsheet "Sheet1"
|
||||
movetosheet "Sheet1"
|
||||
offscr_sc_cols 0
|
||||
offscr_sc_rows 0
|
||||
nb_frozen_rows 1
|
||||
nb_frozen_cols 0
|
||||
nb_frozen_screenrows 2
|
||||
nb_frozen_screencols 0
|
||||
format A 14 1 0
|
||||
format B 18 2 0
|
||||
format 0 2
|
||||
freeze 0
|
||||
label A0 = "Food by Weight"
|
||||
leftstring B0 = "No. Meals"
|
||||
leftstring A1 = "Ajvar"
|
||||
let A1 = 5
|
||||
let B1 = A1*$A$10
|
||||
leftstring A2 = "Apples"
|
||||
let A2 = 3
|
||||
let B2 = A2*$A$10
|
||||
leftstring A3 = "Rocket"
|
||||
let A3 = 0.2
|
||||
let B3 = A3*$A$10
|
||||
leftstring A4 = "Beli Cheese"
|
||||
let A4 = 1
|
||||
let B4 = A4*$A$10
|
||||
leftstring A6 = "Total"
|
||||
let A6 = @sum(A1:A4)
|
||||
leftstring B6 = "Total"
|
||||
let B6 = @sum(B1:B4)
|
||||
leftstring A7 = "Average"
|
||||
let A7 = @avg(A1:A4)
|
||||
leftstring A10 = "Weight of Meal"
|
||||
let A10 = 0.3
|
||||
goto A0
|
||||
@ -39,7 +39,7 @@ Try placing this in a file:
|
||||
|
||||
> [ One ] { fill: seagreen; color: white; } -- label --> [ Two ] { shape: triangle; }
|
||||
>
|
||||
> [ One ] => { arrow-style: closed; } [ Three ]
|
||||
> [ One ] => { arrow-style: closed; } [ Three ] { border-style: none; }
|
||||
>
|
||||
> [ Five ] { fill: maroon; color: yellow; } <=> [ Three ]
|
||||
>
|
||||
@ -54,3 +54,15 @@ Try placing this in a file:
|
||||
> [ Eight ] .. [ None ] { shape: none; fill: red; color: brown; }
|
||||
>
|
||||
> [ no Network ] --> [ Is there an IP address? ]
|
||||
|
||||
> [ Little Group: o]
|
||||
|
||||
|
||||
```
|
||||
echo "( EU [ Madrid ] <---> [ K ] {label: Karlsruhe;}
|
||||
<== ...O\n ..o\n .O\no \nchoo choo ==> [ Cern ] [ Cern ] <== ...O\n ..o\n .O\no \nchoo choo ==> [ Paris ] <...> [ B ] {label: Budapest} )
|
||||
[ B ] <---> [ Belgrade ] [ G ] {label: Glasgow; }
|
||||
<==> [ M ] {label: Manchester },
|
||||
[ Madrid ] <---> [ Belgrade ] [ M ] <--> [ London ] <--> [ B ],
|
||||
[ Belgrade ]" | graph-easy --boxart
|
||||
```
|
||||
|
||||
@ -13,11 +13,14 @@ The ordering of `/etc/fstab` is
|
||||
5. dump
|
||||
6. pass
|
||||
|
||||
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
|
||||
*Example:*
|
||||
|
||||
```
|
||||
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
|
||||
|
||||
|
||||
@ -22,3 +22,8 @@ REP=5
|
||||
free --lohi -g -s $REP | lolcat
|
||||
```
|
||||
|
||||
Check the next thing cron will do:
|
||||
|
||||
```bash
|
||||
cronnext /var/spool/cron/$USER -l
|
||||
```
|
||||
|
||||
@ -10,6 +10,12 @@ See a running log of all system messages:
|
||||
journalctl -f
|
||||
```
|
||||
|
||||
Or just one user:
|
||||
|
||||
```bash
|
||||
journalctl --user -f
|
||||
```
|
||||
|
||||
Or just one unit (`sshd`):
|
||||
|
||||
```bash
|
||||
|
||||
Loading…
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