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Full Discussion: Use variable in bash
Top Forums Shell Programming and Scripting Use variable in bash Post 302872279 by CarloM on Friday 8th of November 2013 05:00:49 AM
Old 11-08-2013
Quote:
Originally Posted by yanglei_fage
can you explain ?
balajesuri's link gives a better way (and an explanation of why eval can be bad).
 

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explain_link_or_die(3)					     Library Functions Manual					    explain_link_or_die(3)

NAME
explain_link_or_die - make a new name for a file and report errors SYNOPSIS
#include <libexplain/link.h> void explain_link_or_die(const char *oldpath, const char *newpath); DESCRIPTION
The explain_link_or_die function is used to call the link(2) system call. On failure an explanation will be printed to stderr, obtained from explain_link(3), and then the process terminates by calling exit(EXIT_FAILURE). This function is intended to be used in a fashion similar to the following example: explain_link_or_die(oldpath, newpath); oldpath The oldpath, exactly as to be passed to the link(2) system call. newpath The newpath, exactly as to be passed to the link(2) system call. Returns: This function only returns on success. On failure, prints an explanation and exits. SEE ALSO
link(2) make a new name for a file explain_link(3) explain link(2) errors exit(2) terminate the calling process COPYRIGHT
libexplain version 0.52 Copyright (C) 2008 Peter Miller explain_link_or_die(3)
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