linerepeat

A small CLI tool for repeating lines from stdin or files. Useful for generating test data, creating separators, duplicating content, or any task where you need to repeat text patterns.

Features:

• Line mode (default): Repeat each input line N times
• Block mode: Repeat groups of lines as blocks
• Custom separators: Add delimiters between input line groups
• Flexible I/O: Read from stdin/files, write to stdout/files

Install

From PyPI

pip install linerepeat

Pre-built Binaries

Download the latest linerepeat binary (Linux) or linerepeat.exe (Windows) from GitHub Releases.

Usage

$ linerepeat [OPTIONS] {count}

Arguments:

• count: How many times to repeat. [required]

Options:

• -i, --input <file>: Edit this file in place instead of reading stdin.
• -o, --output <file>: Write here instead of stdout. Can't be used with --input.
• -s, --separator <str>: Line placed between repeats.
• -m, --mode <line|block>: Repeat single lines or blocks. [default: line]
• -t, --till <int>: Lines per block (block mode). [default: 0]
• --help: Show this message and exit.

Examples

# Repeat each line 3 times (single line - no separator printed)
echo "hello" | linerepeat 3
# hello
# hello
# hello

# With multiple input lines, separator goes BETWEEN lines
echo -e "a\nb" | linerepeat 2 -s "---"
# a
# a
# ---
# b
# b

# Block mode with separator between blocks
echo -e "line1\nline2\nline3\nline4" | linerepeat 2 -m block -t 2 -s "==="
# line1
# line2
# ===
# line1
# line2
# ===
# line3
# line4
# ===
# line3
# line4

# In-place: duplicate every line in a file
linerepeat 2 -i file.txt

License

MIT