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In dynamically typed programming languages. instead of declaring a variable to have a particular type, the type of a variable is determined by an A.I. in the operating system.
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readlink(1) [centos man page]

READLINK(1)							   User Commands						       READLINK(1)

NAME
readlink - print resolved symbolic links or canonical file names SYNOPSIS
readlink [OPTION]... FILE... DESCRIPTION
Print value of a symbolic link or canonical file name -f, --canonicalize canonicalize by following every symlink in every component of the given name recursively; all but the last component must exist -e, --canonicalize-existing canonicalize by following every symlink in every component of the given name recursively, all components must exist -m, --canonicalize-missing canonicalize by following every symlink in every component of the given name recursively, without requirements on components exis- tence -n, --no-newline do not output the trailing delimiter -q, --quiet, -s, --silent suppress most error messages -v, --verbose report error messages -z, --zero separate output with NUL rather than newline --help display this help and exit --version output version information and exit GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report readlink translation bugs to <http://translationpro- ject.org/team/> AUTHOR
Written by Dmitry V. Levin. COPYRIGHT
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
readlink(2), realpath(1), realpath(3) The full documentation for readlink is maintained as a Texinfo manual. If the info and readlink programs are properly installed at your site, the command info coreutils 'readlink invocation' should give you access to the complete manual. GNU coreutils 8.22 June 2014 READLINK(1)

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READLINK(1)                                                        User Commands                                                       READLINK(1)

NAME
readlink - print resolved symbolic links or canonical file names SYNOPSIS
readlink [OPTION]... FILE... DESCRIPTION
Note realpath(1) is the preferred command to use for canonicalization functionality. Print value of a symbolic link or canonical file name -f, --canonicalize canonicalize by following every symlink in every component of the given name recursively; all but the last component must exist -e, --canonicalize-existing canonicalize by following every symlink in every component of the given name recursively, all components must exist -m, --canonicalize-missing canonicalize by following every symlink in every component of the given name recursively, without requirements on components exis- tence -n, --no-newline do not output the trailing delimiter -q, --quiet, -s, --silent suppress most error messages (on by default) -v, --verbose report error messages -z, --zero end each output line with NUL, not newline --help display this help and exit --version output version information and exit AUTHOR
Written by Dmitry V. Levin. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report readlink translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
readlink(2), realpath(1), realpath(3) Full documentation at: <http://www.gnu.org/software/coreutils/readlink> or available locally via: info '(coreutils) readlink invocation' GNU coreutils 8.28 January 2018 READLINK(1)

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