GNU textutils

A set of text utilities

for version 1.22, 1 January 1997

• Introduction
• Common options
• Output of entire files
  • cat: Concatenate and write files
  • tac: Concatenate and write files in reverse
  • nl: Number lines and write files
  • od: Write files in octal or other formats
• Formatting file contents
  • fmt: Reformat paragraph text
  • pr: Paginate or columnate files for printing
  • fold: Wrap input lines to fit in specified width
• Output of parts of files
  • head: Output the first part of files
  • tail: Output the last part of files
  • split: Split a file into fixed-size pieces
  • csplit: Split a file into context-determined pieces
• Summarizing files
  • wc: Print byte, word, and line counts
  • sum: Print checksum and block counts
  • cksum: Print CRC checksum and byte counts
  • md5sum: Print or check message-digests
• Operating on sorted files
  • sort: Sort text files
  • uniq: Uniqify files
  • comm: Compare two sorted files line by line
• Operating on fields within a line
  • cut: Print selected parts of lines
  • paste: Merge lines of files
  • join: Join lines on a common field
• Operating on characters
  • tr: Translate, squeeze, and/or delete characters
    • Specifying sets of characters
    • Translating
    • Squeezing repeats and deleting
    • Warning messages
  • expand: Convert tabs to spaces
  • unexpand: Convert spaces to tabs
• Opening the software toolbox
  • Toolbox introduction
  • I/O redirection
  • The who command
  • The cut command
  • The sort command
  • The uniq command
  • Putting the tools together
• Index

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