Hi,
I'm creating a tar image containing selected files held in a manifest file thus:
cat <manifest file> | xargs tar -cvpf tar.out
I need to preserve the directory as well as the file perms. When my list contains no separate directory lines, the directory is created implicitly when the... (4 Replies)
Hello All,
I just wanted to know what are the different ways of using commands in combination.
The most common one which i know is using pipes.
Also grouping is also done like ( ls; date) where output of both the commands is displayed.
Are there any other ways of combining various... (2 Replies)
I'm trying to tar the files I get from the 'find' command result. However I can't make it run successfuly? This is for our archiving process.
Here is my script:
find /mnt/LOGS -mtime -10 -name "TUXLOG.*" -exec tar -cvf /mnt/LOGS/combine.tar {} \;
Im not sure why it is not working or it is... (2 Replies)
Dear all,
I have to calculate sum of record count of files of the specified directory.
First I tried the following way which prints one or more outputs.
How can I sum of this output?
find /home/work/tmp/1/O/ -type f -print0 | xargs -0 wc -l | grep total
1666288 total
1073908 total
... (4 Replies)
Hello All,
I'm trying the following:find . -name "*" -exec grep -ln "IsAlpha" {} \;
It gives me file names only (having string "IsAlpha"), I want to get line numbers also, something like this: test 1: Line 52
test 1: Line 95 etc
Is it possible to obtain using grep & find only. (5 Replies)
Hello,
Ive got an HP LaserJet 2100 / parallel interface.
I had some troubles getting going due to non-working cups drivers. Updated cups and also used a .ppd.gz file from something HP provided. found the files here...
www.linuxprinting.org/show_printer.cgi?recnum=HP-LaserJet_2100
Anyways.... (1 Reply)
Stupid question, but is there an ANSI C stdlib function that will do this for me? I want to pass the function a path and determine if the current process can read/write/execute on the path. I suppose I can whip something up using fstat and then determining the current process's user/group IDs and... (6 Replies)
Hi
I can't write to fs "/share/nfs" shared by nfs server despite properly setting RW permissions.
NFS server is configured on CentOS and Solaris10 is client.
CentOS NFS Server config :
--------------------------------
Entries in /etc/exports file :
# cat /etc/exports
/inst ... (6 Replies)
test.txt is the dynamic file but some of combination are fix
like below are the lines
;wonder_off =
;wonder_off = disabled
wonder_off =
wonder_off = disabled
the test.txt can content them in any order
#cat test.xt
;wonder_off =
;wonder_off = disabled
wonder_off =
wonder_off =... (5 Replies)
Can you describe how to give privileges to the user in normal use of your folder / home / user
To be able to properly use Git and other applications of Python
I've done something like chown-R myuser / home / myuser
But there were some problems with Git commits....
like link unavailabe and... (3 Replies)
Discussion started by: sandrain
3 Replies
LEARN ABOUT DEBIAN
symbol
Symbol(3perl) Perl Programmers Reference Guide Symbol(3perl)NAME
Symbol - manipulate Perl symbols and their names
SYNOPSIS
use Symbol;
$sym = gensym;
open($sym, "filename");
$_ = <$sym>;
# etc.
ungensym $sym; # no effect
# replace *FOO{IO} handle but not $FOO, %FOO, etc.
*FOO = geniosym;
print qualify("x"), "
"; # "main::x"
print qualify("x", "FOO"), "
"; # "FOO::x"
print qualify("BAR::x"), "
"; # "BAR::x"
print qualify("BAR::x", "FOO"), "
"; # "BAR::x"
print qualify("STDOUT", "FOO"), "
"; # "main::STDOUT" (global)
print qualify(*x), "
"; # returns *x
print qualify(*x, "FOO"), "
"; # returns *x
use strict refs;
print { qualify_to_ref $fh } "foo!
";
$ref = qualify_to_ref $name, $pkg;
use Symbol qw(delete_package);
delete_package('Foo::Bar');
print "deleted
" unless exists $Foo::{'Bar::'};
DESCRIPTION
"Symbol::gensym" creates an anonymous glob and returns a reference to it. Such a glob reference can be used as a file or directory handle.
For backward compatibility with older implementations that didn't support anonymous globs, "Symbol::ungensym" is also provided. But it
doesn't do anything.
"Symbol::geniosym" creates an anonymous IO handle. This can be assigned into an existing glob without affecting the non-IO portions of the
glob.
"Symbol::qualify" turns unqualified symbol names into qualified variable names (e.g. "myvar" -> "MyPackage::myvar"). If it is given a
second parameter, "qualify" uses it as the default package; otherwise, it uses the package of its caller. Regardless, global variable
names (e.g. "STDOUT", "ENV", "SIG") are always qualified with "main::".
Qualification applies only to symbol names (strings). References are left unchanged under the assumption that they are glob references,
which are qualified by their nature.
"Symbol::qualify_to_ref" is just like "Symbol::qualify" except that it returns a glob ref rather than a symbol name, so you can use the
result even if "use strict 'refs'" is in effect.
"Symbol::delete_package" wipes out a whole package namespace. Note this routine is not exported by default--you may want to import it
explicitly.
BUGS
"Symbol::delete_package" is a bit too powerful. It undefines every symbol that lives in the specified package. Since perl, for performance
reasons, does not perform a symbol table lookup each time a function is called or a global variable is accessed, some code that has already
been loaded and that makes use of symbols in package "Foo" may stop working after you delete "Foo", even if you reload the "Foo" module
afterwards.
perl v5.14.2 2010-12-30 Symbol(3perl)