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Full Discussion: Expand Variables and Wildcards into another variable.
Top Forums UNIX for Beginners Questions & Answers Expand Variables and Wildcards into another variable. Post 303035165 by MadeInGermany on Wednesday 15th of May 2019 02:32:39 PM
Old 05-15-2019
You see the difference with
Code:
echo "$file_path"

The quotes prevent the shell to do word-splitting on command arguments.

ls is an external command. The efficient per-line formatter is printf "%s\n" that 1. is a shell-builtin and 2. does no extra I/O.

What do you want to do with the $file_path?
It can make sense to not expand it too early. For example
Code:
file_path="${output_dir}/*MIGRATE*${city_name}*.out"
for f in $file_path

is smarter than
Code:
file_path=`ls ${output_dir}/*MIGRATE*${city_name}*.out`
for f in $file_path

 

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LEARN ABOUT HPUX

pwd

pwd(1)							      General Commands Manual							    pwd(1)

NAME

       pwd - working directory name

SYNOPSIS

DESCRIPTION

       prints the path name of the working (current) directory.

   Options
       recognizes the following options:

	      Display the directory with the name of the symbolic link if any.

		     If  the  environment  variable  contains  an absolute path name of the current directory that does not contain the file names
		     (dot) or (dot-dot), writes this path name to standard output.  Otherwise, the option behaves like the option.

	      Display the actual physical directory path.
		     Directories of symbolic link types are not displayed.

       If both and are specified, the last one applies.  If neither nor is specified, the default option is:

	      from UNIX 2003 environment onwards; see standards(5).

	      otherwise.

EXTERNAL INFLUENCES

       For information about the UNIX Standard environment, see standards(5).

   Environment Variables
       determines the language in which messages are displayed.

       If is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty vari-
       able.  If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of

       If  any	internationalization  variable	contains an invalid setting, behaves as if all internationalization variables are set to "C".  See
       environ(5).

   International Code Set Support
       Single- and multibyte character code sets are supported.

DIAGNOSTICS

       Possible file system trouble; contact system administrator.

       Current directory has been removed (usually by a different process).
		 Use command to move to a valid directory (see cd(1)).

EXAMPLES

       If your home directory is and the command is executed from the home directory, typing produces the following display:

       In the following example, a symbolic link, points to the directory. Then the command displays the actual directory:

       The command displays the directory with the symbolic link:

       In the following example, there is no symbolic link.  The displayed directory is the same for both the and options.

AUTHOR

       was developed by AT&T and HP.

SEE ALSO

       cd(1), csh(1), sh(1), sh-posix(1), standards(5).

STANDARDS CONFORMANCE

																	    pwd(1)
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