2026-02-10 13:42:24 +01:00
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.TH NTU 1 "2025-02-10" "NameToUnix 0.3.0" "User Commands"
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2026-02-10 13:40:48 +01:00
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.SH NAME
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ntu \- sanitize file and directory names to Unix conventions
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.SH SYNOPSIS
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.B ntu
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[\fIOPTIONS\fR] \fIPATH\fR...
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.SH DESCRIPTION
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.B ntu
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(NameToUnix) is a command-line tool that renames files and directories
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to make them compatible with Unix/Linux naming conventions. It replaces
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spaces with underscores, converts German umlauts to their ASCII equivalents,
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and removes or replaces problematic special characters.
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.PP
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The tool processes files recursively, starting from the deepest level to
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avoid conflicts with parent directory renames. It preserves file extensions,
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including double extensions like .tar.gz, and handles hidden files correctly.
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.SH OPTIONS
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.TP
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.BR \-q ", " \-\-quiet
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Suppress output (no rename information on stdout)
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.TP
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.BR \-n ", " \-\-dry\-run
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Show what would be renamed without making actual changes (alias: \-\-no\-changes)
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.TP
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.BR \-f ", " \-\-force
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Overwrite existing files if target already exists
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.TP
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.BR \-e ", " \-\-exclude " \fIPATTERN\fR"
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Exclude files matching glob pattern (can be specified multiple times)
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.TP
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.BR \-v ", " \-\-verbose
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Show verbose debug information
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.TP
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.BR \-\-modify\-root
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Allow renaming of the root directory itself (normally skipped)
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.TP
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.BR \-\-special
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Process symbolic links and special files (normally skipped)
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.TP
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.BR \-\-no\-color
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Disable colored output
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.TP
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.BR \-h ", " \-\-help
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Print help information
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.TP
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.BR \-V ", " \-\-version
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Print version information
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.SH TRANSFORMATIONS
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.B ntu
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applies the following transformations to filenames:
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.TP
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.B Spaces
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Replaced with underscores (_)
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.TP
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.B German Umlauts
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ä → ae, ö → oe, ü → ue, Ä → Ae, Ö → Oe, Ü → Ue, ß → ss
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.TP
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.B Special Characters
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Most special characters are replaced with underscores. Some are preserved
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in specific contexts (e.g., C++ is kept intact).
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.TP
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.B Hidden Files
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Files starting with a dot (.) are recognized and preserved correctly.
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.TP
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.B Double Extensions
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Extensions like .tar.gz, .tar.bz2, .tar.xz are preserved as a unit.
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.TP
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.B Parentheses
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Replaced with underscores.
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.TP
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.B Multiple Underscores
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Consecutive underscores are collapsed to a single underscore.
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.SH EXCLUDED PATTERNS
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By default, the following directories are automatically excluded:
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.PP
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.nf
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.RS
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.git/, .svn/, node_modules/, .cache/, __pycache__/
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.RE
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.fi
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.PP
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Additional patterns can be excluded using the \fB\-e\fR option.
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.SH PARALLEL PROCESSING
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For directories with 100 or more files, \fBntu\fR automatically uses
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parallel processing to improve performance. For smaller directories,
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it processes files sequentially to avoid overhead.
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.SH EXAMPLES
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.TP
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Rename files in current directory (dry-run):
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.B ntu \-n .
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.TP
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Rename files in specific directory:
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.B ntu /path/to/directory
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.TP
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Exclude specific patterns:
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.B ntu \-e "*.tmp" \-e "*.bak" /path/to/directory
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.TP
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Force overwrite existing files:
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.B ntu \-f /path/to/directory
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.TP
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Process multiple directories:
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.B ntu /path/one /path/two /path/three
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.TP
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Verbose output with no colors:
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.B ntu \-v \-\-no\-color /path/to/directory
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.SH CONFIGURATION
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.B ntu
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looks for configuration files in the following locations (in order):
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.PP
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.nf
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.RS
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./.NameToUnix.conf
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~/.config/NameToUnix/config.toml
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/etc/NameToUnix/config.toml
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.RE
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.fi
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.PP
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Configuration files can customize character replacements and other behavior.
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See the project documentation for configuration file format.
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.SH EXIT STATUS
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.TP
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.B 0
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Success
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.TP
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.B 1
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Error occurred during processing
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.SH SAFETY
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.B ntu
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performs several safety checks:
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.IP \(bu 2
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Checks if target file already exists (unless \fB\-\-force\fR is used)
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.IP \(bu 2
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Verifies write permissions before attempting rename
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.IP \(bu 2
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Processes files from deepest to shallowest to avoid parent conflicts
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.IP \(bu 2
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Skips special files unless explicitly requested with \fB\-\-special\fR
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.SH BUGS
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Report bugs at: https://github.com/jamulix/NameToUnix/issues
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.SH AUTHOR
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Written by Dieter Schlüter <dieter.schlueter@linix.de>
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.SH COPYRIGHT
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Copyright \(co 2025 Dieter Schlüter. Licensed under MIT License.
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.SH SEE ALSO
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.BR rename (1),
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.BR detox (1),
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.BR mv (1)
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.PP
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Full documentation at: https://github.com/jamulix/NameToUnix
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