cleanups
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@ -1,15 +1,19 @@
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---
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title: "unison"
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tags: [ "documentation", "backups", "sync" ]
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tags: [ "Documentation", "Backups" ]
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---
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Install unison on both machines, and on both make the `~/.unison` directory.
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Install unison on both machines, and make sure both have the same version of unison, with the same version of the ocaml compiler (the smallest difference will cause problems).
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> unison -version
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Create the `~/.unison` directory on both machines.
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Make a job called `backup`:
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> vim ~/.unison/backup.prf
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> vim ~/.unison/*backup*.prf
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All jobs must end in `.prf`.
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You can name the file anything, but it must end in .prf.
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Here is an example job, which synchronizes the `~/music` directory with a remote machine.
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@ -25,28 +29,18 @@ ignore=Name *.flac
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```
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The last command means it will ignore any file with a name ending in `.flac`.
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Add a port with this line:
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```
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sshargs=-p 4444
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```
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## Automatic Runs
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The first command means this will run but also confirm which files will be deleted, and which will be transferred, us `batch = true` instead.
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Or you can deleted that line in the `.prf` file and run it with a flag:
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> unison -batch *backup*.prf
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Set unison to run with crontab or a systemd unit file to have directories synchronize automatically.
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## Problem Solving
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Unison is extremely sensitive to version changes.
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Both machines must have exactly the same version of unison installed, as well as the same version of `ocaml`.
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Check with:
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> unison -version
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You will see data files summarizing what has happened in the `~/.unison` directory.
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If something goes wrong, you may be prompted to delete these to start again.
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@ -2,9 +2,17 @@
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title: "bash_tricks"
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tags: [ "Documentation", "System" ]
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---
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# Automatic mp3 Tagging
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# Track Live Changes
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/u/OneTurnMore on Reddit:
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See changes in a file as it changes:
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> tail -f *somefile*
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See changes in a directory, as it changes:
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> watch -d ls *directory*
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# Automatic mp3 Tagging
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> !/usr/bin/env bash
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> IFS=$'\n'
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@ -14,7 +22,7 @@ tags: [ "Documentation", "System" ]
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One can also use
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> sed s/\,[^\.]*$//
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> sed s/\,[^\.]\*$//
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... in order to avoid multiple full stops messing up syntax.
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@ -32,13 +40,6 @@ Regular expressions (``regex'') looks for patterns and is used with find and gre
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If the shell is set to find file ``a*b.txt'' then it will pass this first to regex, and hit items like `aab.txt' and `abb.txt'. If it finds nothing, it'll then use globbing, and interpret `a*b.txt' literally.
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# Alias Expansion
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> echo '"\C- ": shell-expand-line' >> ~/.inputrc
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Reload bash, and you can use Ctrl+Space to expand an alias.
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Type in `ll` (or any alias), then Ctrl+Space.
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# Automatic Renaming
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There are a bunch of files:
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@ -50,7 +51,7 @@ There are a bunch of files:
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* Column CV.tex
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* tccv.cls
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Goal: swap the word ``Column'' for ``Malin'' in all files.
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Goal: swap the word "Column" for "Alice" in all files.
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> IFS=$'\n'
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@ -88,7 +89,6 @@ Add number to variables with:
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# Finding Duplicate Files
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> find . -type f -exec md5sum '{}' ';' | sort | uniq --all-repeated=separate -w 15 > all-files.txt
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... add blank line to top of first file.
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