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Full Discussion: question in shell script
Homework and Emergencies Homework & Coursework Questions question in shell script Post 302551074 by pludi on Monday 29th of August 2011 10:00:07 AM
Old 08-29-2011
First of all, I don't think your script behaves as required, at least I don't see a requirement to tell the user that the argument isn't a directory, or doesn't have the executable bit set.

Try to get the logical flow down for the script first, and jot down some pseudo-code, eg
Code:
if argument given
  if directory
    count files
    exit
  else if file
    if executable
      say so
    else
      say not executable
  else
    argument is something else
else
  say error

For the tests, test (shorthand: [ ... ]) has some very valuable operators to check for files, directories, executables, and if a string has zero length.

BTW, with your method of counting you'll have a one-off error. Compare the output of ls -l | wc -l and ls | wc -l. I'll leave it to you to find the source of that error Smilie
 

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mktemp(3C)						   Standard C Library Functions 						mktemp(3C)

NAME
mktemp - make a unique file name from a template SYNOPSIS
#include <stdlib.h> char *mktemp(char *template); DESCRIPTION
The mktemp() function replaces the contents of the string pointed to by template with a unique file name, and returns template. The string in template should look like a file name with six trailing 'X's; mktemp() will replace the 'X's with a character string that can be used to create a unique file name. Only 26 unique file names per thread can be created for each unique template. RETURN VALUES
The mktemp() function returns the pointer template. If a unique name cannot be created, template points to a null string. ERRORS
No errors are defined. EXAMPLES
Example 1 Generate a filename. The following example replaces the contents of the "template" string with a 10-character filename beginning with the characters "file" and returns a pointer to the "template" string that contains the new filename. #include <stdlib.h> ... char *template = "/tmp/fileXXXXXX"; char *ptr; ptr = mktemp(template); USAGE
Between the time a pathname is created and the file opened, it is possible for some other process to create a file with the same name. The mkstemp(3C) function avoids this problem and is preferred over this function. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
mkstemp(3C), tmpfile(3C), tmpnam(3C), attributes(5), standards(5) SunOS 5.11 15 Sep 2004 mktemp(3C)
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