Linux/Unix text processing tools

http://tldp.org/LDP/abs/html/textproc.html

* sort
* tsort
* uniq
* expand, unexpand::The expand filter converts tabs to spaces.
* cut
* paste
* join
* head
* tail
* grep
* look
* sed,awk
* wc
* tr
* fold
* col
* column
* nl
* pr
* gettext
* msgfmt
* iconv::A utility for converting file(s) to a different encoding (character set).
* recode::converting a file to a different encoding scheme
* TeX, gs
* texexec::Utility for processing TeX and pdf files
* enscript::Utility for converting plain text file to PostScript
* groff, tbl, eqn::text markup and display formatting language
* lex, yacc