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Full Discussion: UNIX shell scripting programming in files
Homework and Emergencies Homework & Coursework Questions UNIX shell scripting programming in files Post 303002458 by bakunin on Thursday 24th of August 2017 02:21:29 PM
Old 08-24-2017
Quote:
Originally Posted by mounica bijjala
Code:
grep -f file1 file2

So far, so good. Notice, though, that every file has a "short address" (the files name) and a "long address" (the fies name and its full path).

This works similar to telephone numbers: if you give someone your number without a regional area code and country code it will work as long as the person is in the same area as you.
Code:
123 456 789

But once outside this area you need to give him your area code too to make it work
Code:
0123 / 123 456 789

and to make sure the number works from whereever he is you will have to add the country code too:

Code:
+123 (123)  123 456 789

The same is true for files: you can address them by their name only, but then you will only find them if you happen to be in the same directory. If you aren't you won't. To make sure you find them regardless of where you are provide a full pathname instead. In this case the files name is not
Code:
file1

but rather
Code:
/some/directory/where/to/find/file1

As a general rule: to make sure files are always found regardless of from where you call a script use always the long form of (so-called) "absolute path names" when you address files inside scripts.

I hope this helps.

bakunin
 

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LEARN ABOUT DEBIAN

vifm

VIFM(1) 							   File Manager 							   VIFM(1)

NAME

       vifm - a ncurses based file manager with vi like keybindings

SYNOPSIS

       vifm [ options ] [ dir1 [ dir2 ]]

DESCRIPTION

       This  manual  page  documents briefly the vifm file manager.  This manual page was written for the Debian distribution because the original
       program does not have a manual page.
       vifm is a ncurses based file manager with vi like keybindings.  If you use vi, vifm gives you complete keyboard	control  over  your  files
       without having to learn a new set of commands.
       For full documentation, visit the doc directory. A better man page may follow later.

OPTIONS

       These  programs	follow	the  usual  GNU  command  line	syntax, with long options starting with two dashes (`-').  A summary of options is
       included below.
       The optional argument dir1 opens an initial directory in the left pane, the dir2 another one for the right pane	respectively.  If  one	or
       both are missing, the current working directory is used.

       --help Show summary of options.

       --version
	      Show version of program.

SEE ALSO

       vi(1),

AUTHOR

       This manual page was written by Edelhard Becker <becker@edelhard.de>, for the Debian GNU/Linux system (but may be used by others).

Edelhard Becker 						  August 27, 2002							   VIFM(1)
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