Welcome to littleutils 1.2.6. The littleutils are a collection of small and
simple utilities that I believe users (and script-writers in particular) will
find useful.
The basic littleutils include the following utilities:
filedate - print the modification times of the specified files
filehash - print various hash digests and filesizes for the specified files
filemode - print the file access permissions of the specified files
filenode - print the inode number of the specified files
fileown - print the uid/gid/username/groupname of the specified files
filesize - print the file size of the specified files
lrealpath - print the real path of the specified files
lsysinfo - print out information from sysinfo(2) and sysconf(2)
randomize - randomize lines from one or more files or from stdin
tempname - create a unique temporary file for use by shell scripts
There are some image processing utilities:
imagdiff - show the differences between two images files in a third file
imagsize - figure out the image size of various image formats
jpgcom - print any comments present in the specified JPEG image files
rot-jpg - losslessly rotate JPEG image files
pngrecolor - rewrite a PNG file with a minimal palette
pngstrip - rewrite a PNG file with all extraneous information removed
There are some text file "cleanup" utilities:
notabs - convert all tab characters to spaces in text files
notrail - remove all trailing spaces characters from text files
lreplace - perform string substitutions on text files
There are some compression optimization utilities:
opt-gif - losslessly optimize GIF image files
opt-jpg - losslessly optimize JPEG image files
opt-png - losslessly optimize PNG image files
rar2tarcat - convert .rar (or .RAR) to .tar via stdout
recomp-jpg - recompress JPEG image files to a lower quality level
to-gzip - convert .Z (compress) and .lzo (lzop) to .gz (gzip)
to-bzip2 - convert .Z, .lzo, and .gz files to .bz2 (bzip2)
to-bzip3 - convert .Z, .lzo, .gz, and .bz2 files to .bz3 (bzip3)
to-7zip - convert .Z, .gz, .lzo, .bz2, and .bz3 files to .7z (p7zip) [extra only]
to-lzip - convert .Z, .gz, .lzo, .bz2, and .bz3 files to .lz (lzip)
to-lzma - convert .Z, .gz, .lzo, .bz2, and .bz3 files to .lzma (lzma/lzma_alone)
to-xz - convert .Z, .gz, .lzo, .bz2, and .bz3 files to .xz (xz)
to-zst - convert .Z, .gz, .lzo, .bz2, and .bz3 files to .zst (zstd)
zip2tarcat - convert .zip (or .ZIP) to .tar via stdout
There are some file maintenance utilites:
lowercase - rename files to all-lowercase filenames
uppercase - rename files to all-uppercase filenames
frenum - rename/renumber files using a variety of renaming schemes
pren - rename files using Perl regular expressions [extra only]
repeats, repeats.pl, repeats.py - search for duplicate files
wipe-free - overwrite all free space in a partition with zeros
There are some utilities that work with PDF files:
opt-pdf - optimize PDF files using poppler or ghostscript [extra only]
pdfidiff - show the differences between two PDF files in a third PDF
[extra only]
pdfquant - reduce the size of the colormap used by PDF files composed of
bitmaps [extra only]
For information on compiling and installing the littleutils, see the INSTALL
file (INSTALL is the boilerplate instruction file distributed with autoconf).
Generally, you should run:
./configure # for full list of options, run: ./configure --help
make
make install # as root or user with proper file system permissions
And optionally, if you're feeling brave, you can install utilities from the
"extra" subdirectory:
make install-extra # as root or user with proper file system permissions
It is very important to do the "make install" step to ensure that all of the
littleutils work properly.
GNU make is required. Version 3.79.1 or later is recommended.
It should be noted that the littleutils make use of several other free software
packages. To make *full* use of the littleutils, make sure that all of these
packages are installed. [If some of the packages are not, the configure script
will cause the particular littleutils that rely on them will be skipped on
install. This will not affect the operation of the other littleutils.] Most
of these should already be present on your system, but if not, here is where
source code and binaries can be found:
bash: https://www.gnu.org/software/bash/
perl: https://www.perl.com/
python: https://www.python.org/
CryptX: https://metacpan.org/pod/CryptX
file: https://astron.com/pub/file/
gifsicle: http://www.lcdf.org/gifsicle/
ghostscript: https://www.ghostscript.com/
img2pdf: https://pypi.org/project/img2pdf/
Imlib2: https://sourceforge.net/projects/enlightenment/files/
jpegtran: http://www.ijg.org/
libpng: http://www.libpng.org/pub/png/libpng.html
pngcrush: https://pmt.sourceforge.net/pngcrush/
poppler: https://poppler.freedesktop.org/
bzip2: https://sourceforge.net/projects/bzip2/
bzip3: https://github.com/kspalaiologos/bzip3
gzip: http://www.gzip.org/
lzip: https://www.nongnu.org/lzip/lzip.html
lzma_alone: https://www.7-zip.org/sdk.html (lzma_alone is in the SDK)
lzop: http://www.lzop.org/
xz,lzma: https://tukaani.org/xz/
zstd: https://github.com/facebook/zstd/releases
7z,7za,7zr: https://sourceforge.net/projects/p7zip/
Enjoy!
Brian Lindholm
