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Full Discussion: Cut -d Question
Top Forums Shell Programming and Scripting Cut -d Question Post 302111185 by Janus on Monday 19th of March 2007 10:54:41 PM
Old 03-19-2007
Quote:
Originally Posted by Ygor
Search:
Code:
\(     start of first bracketed pattern
.*     any number of characters
\)     end of first bracketed pattern
==-=-  literal
.*     any number of characters
\(     start of second bracketed pattern
\.pdf  literal ("." is escaped to prevent its special meaning)
\)     end of second bracketed pattern

Replacement:
Code:
\1     first bracketed pattern
\2     second bracketed pattern

Thank you, I see now how it all fits together. Seeing the actual meaning behind what each piece is doing helps out quite a bit! As stated in the replies above, .pdf isn't necessarily the only file extension this would have to look for. I made a slight change to it and it seems to work:

sed 's/\(.*\)==-=-.*\(\...\)/\1\2/'

I took pdf and replaced it with ..., the only question is, what if there is a greater number than 3 for the file extension? I don't think ... will work then, since it's going for literally 3 characters for that second part. What would be the correct expression to use to say "Any amount of character" and not just 3? Thanks again, both of ye for your input and help!
 

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LEARN ABOUT MOJAVE

pwd

PWD(1)							    BSD General Commands Manual 						    PWD(1)

NAME

     pwd -- return working directory name

SYNOPSIS

     pwd [-L | -P]

DESCRIPTION

     The pwd utility writes the absolute pathname of the current working directory to the standard output.

     Some shells may provide a builtin pwd command which is similar or identical to this utility.  Consult the builtin(1) manual page.

     The options are as follows:

     -L      Display the logical current working directory.

     -P      Display the physical current working directory (all symbolic links resolved).

     If no options are specified, the -L option is assumed.

ENVIRONMENT

     Environment variables used by pwd:

     PWD  Logical current working directory.

EXIT STATUS

     The pwd utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     builtin(1), cd(1), csh(1), sh(1), getcwd(3)

STANDARDS

     The pwd utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

BUGS

     In csh(1) the command dirs is always faster because it is built into that shell.  However, it can give a different answer in the rare case
     that the current directory or a containing directory was moved after the shell descended into it.

     The -L option does not work unless the PWD environment variable is exported by the shell.

BSD
								  April 12, 2003							       BSD
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