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Full Discussion: What's the best way to check file permissions before moving files if needed?
Top Forums Shell Programming and Scripting What's the best way to check file permissions before moving files if needed? Post 303036919 by MadeInGermany on Wednesday 17th of July 2019 07:24:56 AM
Old 07-17-2019
Quote:
Originally Posted by Cacializ
...
But if the variables are checked with [ -d "$directory" ] && [ -d "$destination" ], the railing slash is not needed, right?
Right. A trailing / would cause a double-check. Is technically okay though.

For Posix-compatibility you should stick to "$(ls -A)" and test it for being null or non-null. Generally better for correctly counting crazy filenames is "$(ls -qA)".
In HP-UX you can do
Code:
UNIX95=1; export UNIX95

that tells many commands to become Posix-compliant.
In Solaris you can prefix /usr/xpg4/bin to the PATH. The following should work pretty much everywhere:
Code:
PATH=/usr/xpg4/bin:/bin:/usr/bin:/usr/sbin:/sbin UNIX95=1
export PATH UNIX95
# all Posix commands and options should work now

This User Gave Thanks to MadeInGermany For This Post:
Peasant
 

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LEARN ABOUT OPENSOLARIS

link

link(1M)						  System Administration Commands						  link(1M)

NAME

       link, unlink - link and unlink files and directories

SYNOPSIS

       /usr/sbin/link  existing-file new-file

       /usr/xpg4/bin/link  existing-file new-file

       /usr/sbin/unlink file

DESCRIPTION

       The link and unlink commands link and unlink files and directories. Only super-users can use these commands on directories.

       Use  link  to  create  a new file that points to an existing file. The  existing-file and  new-file operands  specify the existing file and
       newly-created files.  See OPERANDS.

       link and  unlink directly invoke the link(2) and unlink(2) system calls, performing exactly what they are told to  do  and  abandoning  all
       error checking. This differs from the  ln(1) command. See  ln(1).

       While linked files and directories can be removed using unlink, it is safer to use rm(1) and rmdir(1) instead. See  rm(1) and  rmdir(1).

   /usr/xpg4/bin/link
       If  the	existing  file being hard linked is itself a symbolic link, then the newly created file (new-file) will be a hard link to the file
       referenced by the symbolic link, not to the symbolic link object itself (existing-file).

OPERANDS

       The following operands are supported:

       existing-file	Specifies the name of the existing file to be linked.

       file		Specifies the name of the file to be unlinked.

       new-file 	Specifies the name of newly created (linked) file.

ENVIRONMENT VARIABLES

       See  environ(5) for descriptions of the following environment variables that affect the execution of  link: LANG, LC_ALL, LC_CTYPE, LC_MES-
       SAGES, and NLSPATH.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

   /usr/xpg4/bin/link
       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWxcu4			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ln(1), rm(1), link(2), unlink(2), attributes(5), environ(5), standards(5)

SunOS 5.11							    9 Oct 2002								  link(1M)
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