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"snake oil" exact phrase

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~~```~~
#!/bin/sh
export LC_ALL=C # to make sorting not depend on locale
# Ignore some well-known directories with many files
find_args='
-path /usr/lib/modules
-o -path /etc/ssl/certs
-o -path /etc/ca-certificates/extracted
'
# Get all files and directories
find /etc /opt /usr \( $find_args \) -prune -o -print | sort > /tmp/all_files
# Get files and directories known to pacman, removing trailing slashes
pacman -Qlq | sed 's,/$,,' | sort > /tmp/pacman_controlled_files
# List files and directories not known to pacman
comm -23 /tmp/all_files /tmp/pacman_controlled_files
```

```sh
#!/bin/sh
export LC_ALL=C # to make sorting not depend on locale
# Ignore some well-known directories with many files
find_args='
-path /usr/lib/modules
-o -path /etc/ssl/certs
-o -path /etc/ca-certificates/extracted
'
# Get all files and directories
find /etc /opt /usr \( $find_args \) -prune -o -print | sort > /tmp/all_files
# Get files and directories known to pacman, removing trailing slashes
pacman -Qlq | sed 's,/$,,' | sort > /tmp/pacman_controlled_files
# List files and directories not known to pacman
comm -23 /tmp/all_files /tmp/pacman_controlled_files
```