4chandump.log

4chandump.log

pi@raspberrypi:~ $ file
Usage: file [-bcEhikLlNnprsvzZ0] [--apple] [--extension] [--mime-encoding] [--mime-type]
            [-e testname] [-F separator] [-f namefile] [-m magicfiles] file ...
       file -C [-m magicfiles]
       file [--help]
pi@raspberrypi:~ $ cd Downloads/
pi@raspberrypi:~/Downloads $ file _pol_118.zst 
_pol_118.zst: Zstandard compressed data (v0.8+), Dictionary ID: None
pi@raspberrypi:~/Downloads $ apt-cache search zstd
libzstd-dev - fast lossless compression algorithm -- development files
libzstd1 - fast lossless compression algorithm
zstd - fast lossless compression algorithm -- CLI tool
pi@raspberrypi:~/Downloads $ sudo apt-get install zstd
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  zsh zsh-common
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  libzstd1
The following NEW packages will be installed:
  libzstd1 zstd
0 upgraded, 2 newly installed, 0 to remove and 76 not upgraded.
Need to get 385 kB of archives.
After this operation, 1,528 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://mirrordirector.raspbian.org/raspbian stretch/main armhf libzstd1 armhf 1.1.2-1 [160 kB]
Get:2 http://mirrordirector.raspbian.org/raspbian stretch/main armhf zstd armhf 1.1.2-1 [225 kB]
Fetched 385 kB in 0s (1,022 kB/s)
Selecting previously unselected package libzstd1.
(Reading database ... 128283 files and directories currently installed.)
Preparing to unpack .../libzstd1_1.1.2-1_armhf.deb ...
Unpacking libzstd1 (1.1.2-1) ...
Selecting previously unselected package zstd.
Preparing to unpack .../zstd_1.1.2-1_armhf.deb ...
Unpacking zstd (1.1.2-1) ...
Setting up libzstd1 (1.1.2-1) ...
Processing triggers for libc-bin (2.24-11+deb9u1) ...
Processing triggers for man-db (2.7.6.1-2) ...
Setting up zstd (1.1.2-1) ...
pi@raspberrypi:~/Downloads $ zstd --help
*** zstd command line interface 32-bits v1.1.2, by Yann Collet ***
Usage :
      zstd [args] [FILE(s)] [-o file]

FILE    : a filename
          with no FILE, or when FILE is - , read standard input
Arguments :
 -#     : # compression level (1-19, default:3) 
 -d     : decompression 
 -D file: use `file` as Dictionary 
 -o file: result stored into `file` (only if 1 input file) 
 -f     : overwrite output without prompting 
--rm    : remove source file(s) after successful de/compression 
 -k     : preserve source file(s) (default) 
 -h/-H  : display help/long help and exit

Advanced arguments :
 -V     : display Version number and exit
 -v     : verbose mode; specify multiple times to increase log level (default:2)
 -q     : suppress warnings; specify twice to suppress errors too
 -c     : force write to standard output, even if it is the console
 -r     : operate recursively on directories
--ultra : enable levels beyond 19, up to 22 (requires more memory)
--no-dictID : don't write dictID into header (dictionary compression)
--[no-]check : integrity check (default:enabled)
--test  : test compressed file integrity 
--[no-]sparse : sparse mode (default:enabled on file, disabled on stdout)
 -M#    : Set a memory usage limit for decompression 
--      : All arguments after "--" are treated as files 

Dictionary builder :
--train ## : create a dictionary from a training set of files 
 -o file : `file` is dictionary name (default: dictionary) 
--maxdict ## : limit dictionary to specified size (default : 112640) 
 -s#    : dictionary selectivity level (default: 9)
--dictID ## : force dictionary ID to specified value (default: random)

Benchmark arguments :
 -b#    : benchmark file(s), using # compression level (default : 1) 
 -e#    : test all compression levels from -bX to # (default: 1)
 -i#    : minimum evaluation time in seconds (default : 3s)
 -B#    : cut file into independent blocks of size # (default: no block)
pi@raspberrypi:~/Downloads $ zstd -d _pol_118.zst 
_pol_118.zst        : 89076912 bytes                                           
pi@raspberrypi:~/Downloads $ file _pol_118
_pol_118: UTF-8 Unicode text, with very long lines
pi@raspberrypi:~/Downloads $ wtf
bash: wtf: command not found