whats the meaning of ::
colon in PATH environment?
/usr/local/bin:/usr/bin:/usr/local/gnu/bin::.:/usr/local/bin:/usr/bin:/usr/local/gnu/bin:/usr/local/bin
and whats the meaning of // in PATH ? (1 Reply)
Hi,
i know that this topic discussed for many times but although i had researched them i couldnt succeed in my problem.
i am following a step-by-step instruction guide and must do the following:
-------------
To ensure access, set the path PATH $ORACLE_HOME/perl/bin:$PATH and set the Perl... (2 Replies)
Hi,
I am having a variable
Like
line="/dir1/dir2/gr3/file.ksh"
I need to get the /dir1/dir2/gr3 alone. the no of directories may differ at each time.
Please advice. thanks in advance. (3 Replies)
Hello,
i have another sed question.. I'm trying to do variable substition with sed and i'm running into a problem.
my var1 is a string constructed like this:
filename1 filerev1 filepath1
my var2 is another string constructed like this:
filename2 filerev2 filepath2
when i do... (2 Replies)
Hi
I need a script which will remove a path from PATH environment variable. For example
$echo PATH
/usr/local/bin:/usr/bin:test/rmve:/usr/games
$echo rmv
test/rmve
Here I need a shell script which will remove rmv path (test/rmve) from PATH... (9 Replies)
Hi,
Could anyone help me in writing a single line code by either using (sed, awk, perl or whatever) to extract a specific path from the PATH environment variable?
for eg: suppose the PATH is being set as follows
PATH=/usr/bin/:/usr/local/bin:/bin:/usr/sbin:/usr/bin/java:/usr/bin/perl3.4
... (2 Replies)
Hello Folks,
I want to append a path in user's PATH variable which should be available in current session.
Background
Numerous persons will run a utility.
Aim is to add the absolute path of the utility the first time it runs so that next runs have the PATH in env & users can directly run... (6 Replies)
Hi I'm trying to select text between two lines, I'm using sed to to this, but I need to pass variables to it. For example
start="BEGIN /home/mavkoup/data"
end="END"
sed -n -e '/${start}/,/${end}/g' doesn't work. I've tried double quotes as well. I think there's a problem with the / in the... (4 Replies)
hi all,
i have to implement a mini-SHELL for a project in C++
i used "system()" to call bash functions found in $PATH
i want to change this variable to $MYPATH, so, when i execute a coommand,
the program will look for it in $MYPATH, not in $PATH
how can i do it?
Double post (0 Replies)
I am new to shell scripting and I ran into a couple lines of code which I don't completely understand:
PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/entity/bin
data_dir=/usr/local/entity/projectI believe data_dir to be a more conventional link to a directory. However, I am not sure what PATH... (12 Replies)
Discussion started by: Circuits
12 Replies
LEARN ABOUT LINUX
dpkg::path
Dpkg::Path(3) libdpkg-perl Dpkg::Path(3)NAME
Dpkg::Path - some common path handling functions
DESCRIPTION
It provides some functions to handle various path.
METHODS
get_pkg_root_dir($file)
This function will scan upwards the hierarchy of directory to find out the directory which contains the "DEBIAN" sub-directory and
it will return its path. This directory is the root directory of a package being built.
If no DEBIAN subdirectory is found, it will return undef.
relative_to_pkg_root($file)
Returns the filename relative to get_pkg_root_dir($file).
guess_pkg_root_dir($file)
This function tries to guess the root directory of the package build tree. It will first use get_pkg_root_dir(), but it will
fallback to a more imprecise check: namely it will use the parent directory that is a sub-directory of the debian directory.
It can still return undef if a file outside of the debian sub-directory is provided.
check_files_are_the_same($file1, $file2, $resolve_symlink)
This function verifies that both files are the same by checking that the device numbers and the inode numbers returned by
stat()/lstat() are the same. If $resolve_symlink is true then stat() is used, otherwise lstat() is used.
canonpath($file)
This function returns a cleaned path. It simplifies double //, and remove /./ and /../ intelligently. For /../ it simplifies the
path only if the previous element is not a symlink. Thus it should only be used on real filenames.
$newpath = resolve_symlink($symlink)
Return the filename of the file pointed by the symlink. The new name is canonicalized by canonpath().
my $cmdpath = find_command($command)
Return the path of the command if available on an absolute or relative path or on the $PATH, undef otherwise.
my $control_file = get_control_path($pkg, $filetype)
Return the path of the control file of type $filetype for the given package.
my @control_files = get_control_path($pkg)
Return the path of all available control files for the given package.
AUTHOR
Raphael Hertzog <hertzog@debian.org>.
1.16.0.3 2012-04-17 Dpkg::Path(3)