operation on text

Case & character operations

• Uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case
• Character substitution (tr, sed s///)
• Diacritic/accent stripping (normalize é→e)
• Full-width ↔ half-width character conversion (CJK contexts)
• Case folding for case-insensitive comparison

Whitespace & structure

• Trim leading/trailing whitespace
• Collapse multiple spaces/tabs into one
• Line wrapping / unwrapping (fold, fmt)
• Indentation conversion (tabs ↔ spaces, tab width change)
• Line-ending conversion (CRLF ↔ LF, dos2unix/unix2dos)
• Line sorting, deduplication, shuffling (sort, uniq, shuf)
• Line numbering / stripping numbers
• Column alignment (column, paste)
• Joining lines / splitting on delimiter

Encoding & character sets

• Character encoding conversion (UTF-8, UTF-16, Latin-1, ASCII) — iconv
• Encoding detection (uchardet, chardet)
• Base64 encode/decode
• URL encode/decode (percent-encoding)
• HTML entity encode/decode (& ↔ &)
• Unicode normalization forms (NFC, NFD, NFKC, NFKD)
• Escape/unescape sequences (\n, \t, \", regex-escape)
• Hex ↔ text, binary ↔ text, ROT13, Caesar cipher (novelty/education)

Format & markup conversion

• Markdown ↔ HTML ↔ LaTeX ↔ DOCX ↔ ODT (pandoc)
• Plaintext ↔ rich text
• CSV ↔ JSON ↔ YAML ↔ XML ↔ TOML
• Table reformatting (Markdown table ↔ CSV ↔ ASCII table)
• Syntax highlighting injection/removal
• Front matter extraction (YAML headers in Markdown)

Structural transformation

• Find and replace (literal, regex, multiline)
• Text extraction (regex capture groups, XPath, JSONPath)
• Templating/interpolation (Jinja2, mustache)
• Merging multiple files, splitting one file into many
• Diffing and patching (diff, patch)
• Deduplication of paragraphs/blocks
• Reordering/sorting by custom key
• Column extraction/reordering (cut, awk)
• Pivoting/reshaping tabular text (wide ↔ long)

Compression & packaging (text-adjacent)

• Gzip/bzip2/xz text compression
• Text file archiving into single bundle (tar, zip of .txt files)

Linguistic/NLP operations

• Tokenization (word, sentence, subword/BPE)
• Stemming, lemmatization
• Stopword removal
• Part-of-speech tagging
• Named entity extraction
• Transliteration (script ↔ script, e.g., Tamil ↔ Latin, Devanagari ↔ Latin)
• Translation (language ↔ language)
• Spell-check and correction
• Word/character/line counting (wc)
• Readability scoring
• N-gram extraction
• Text summarization
• Paraphrasing
• Sentiment/keyword extraction

Validation & analysis

• Syntax validation (JSON lint, YAML lint, XML well-formedness)
• Schema validation (JSON Schema)
• Regex matching/testing
• Duplicate line/content detection
• Checksum/hash generation (md5sum, sha256sum) for integrity, not content
• Language detection

Security/privacy-related text ops

• PII redaction/masking
• Encryption/decryption (gpg on text files)
• Digital signing of text content

Automation/pipelining ops

• Batch renaming based on text content
• Watch-and-transform (inotify + script triggers)
• Templated document generation (mail-merge style)
• Scripted multi-step pipelines chaining several of the above (e.g., OCR → clean → translate → format)

If you want, I can convert this into a lookup table matching operation → specific CLI tool → Fedora/Termux install command, similar to your other reference-list formats.