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README
hoe: Haskell One-liner Evaluator
About
hoe is AWK like text processor, but can use Haskell.
It can process text files in various ways depends on types of given scripts.
Usage
To show basic usage, run hoe --help.
hoe Haskell One-liner Evaluator, (c) Hideyuki Tanaka
hoe [OPTIONS] SCRIPT [FILES]
Common flags:
-i --inplace[=EXT] Edit files in place (make backup if EXT supplied)
-m --mod[=ITEM] Import a module before running the script
-? --help Display help message
-V --version Print version information
-v --verbose Loud verbosity
-q --quiet Quiet verbosity
- Sort lines
$ ls | hoe 'lines >>> sort'
LICENSE
README.md
Setup.hs
cabal.sandbox.config
dist
hoe.cabal
src
template
test
- Drop lines
ls | hoe 'lines >>> drop 3'
cabal.sandbox.config
dist
hoe.cabal
src
template
test
- Add "> " to line head.
ls | hoe 'map ("> " ++)'
> LICENSE
> README.md
> Setup.hs
> cabal.sandbox.config
> dist
> hoe.cabal
> src
> template
> test
It also accepts Char -> Char functions.
- To uppercase
$ ls | hoe 'toUpper'
LICENSE
README.MD
SETUP.HS
CABAL.SANDBOX.CONFIG
DIST
HOE.CABAL
SRC
TEMPLATE
TEST
Of course, it can evaluate simple values.
- Calculate a integer value
$ hoe '2^100'
1267650600228229401496703205376
- Make many files
$ hoe 'forM [1..10] $ \i -> writeFile ("file."++show i) ""'
*Note that all licence references and agreements mentioned in the hoe README section above
are relevant to that project's source code only.