10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have a file 1.txt with the below contents.
-----cat 1.txt-----
1234
5678
1256
1234
1247
-------------------
I have 3 more files in a folder
-----ls -lrt-------
A1.txt
A2.txt
A3.txt
-------------------
The contents of those three files are similar format with different data values... (8 Replies)
Discussion started by: realspirituals
8 Replies
2. Shell Programming and Scripting
How do i make a hardlink readable,writable, and executable by me?
I am kinda hoping for a command i can use
Also, i was wondering what file type are hardlinks and softlinks?Are they directories? (10 Replies)
Discussion started by: lilbo4231
10 Replies
3. Programming
hi all,
i need a c++ function which converts a linear list to circular.
presently i am working with two files. i.e., one linear list file. and one circular list file to do some operations. i thought it will be helpful if there is a function that converts a linear list to circular n undo the... (1 Reply)
Discussion started by: vidyaj
1 Replies
4. Shell Programming and Scripting
Does anyone have a good example? I am having trouble looping..
Thanks (1 Reply)
Discussion started by: mrlayance
1 Replies
5. UNIX for Dummies Questions & Answers
Hi :-)
i have a dump of a backupdisk (~540GB / ext3). The Backups have some 100 millions of hardlinks (backups are created with storeBackup). The OS is linux.
A restore of a directory ended after some days with the errormessage "no memory to extend symbol table"
The restore of the complete... (0 Replies)
Discussion started by: turricum
0 Replies
6. Shell Programming and Scripting
I will be very grateful if someone can help me with bash shell script that does the following:
I have a list of filenames:
A01_155716
A05_155780
A07_155812
A09_155844
A11_155876
that are kept in different sub directories within my current directory. I want to find these files and copy... (3 Replies)
Discussion started by: manishabh
3 Replies
7. Shell Programming and Scripting
EDIT : This is for perl
@data2 = grep(/$data/, @list_now);
This gives me @data2 as
Printing data2 11 testzone1 running /zones/testzone1 ***-*****-****-*****-***** native shared
But I really cant access data2 by its individual elements.
$data2 is the entire list, while $data,2,3...... (1 Reply)
Discussion started by: shriyer
1 Replies
8. UNIX for Dummies Questions & Answers
Hi there!
I have 150 txt files named chunk1, chunk2, ........., chunk150. I have a second file called string.txt with more than 1000 unique strings, house, dog, cat ... I want to know which command I should use to count how many times each string appears in the 150 files.
I have tried... (4 Replies)
Discussion started by: Pep Puigvert
4 Replies
9. UNIX for Dummies Questions & Answers
Hello,
Here is my problem. there are two files.
first.txt <<< contains email address
======
abc@mail.com
abd@mail.com
abe@mail.com
second.txt <<< contains webpage links
========
http//www.test.com/abc/index.html
http://www.test.com/abd/index.html
http://www.test.com/abe/index.html... (2 Replies)
Discussion started by: paulds
2 Replies
10. UNIX for Dummies Questions & Answers
I am using command substitution into a find command in a script where I have built a menu to do a bunch of tasks within my unix account. When I choose the options for to find a file/files that have the same inode of the entered filename, ie hardlinks, nothing shows up. When I choose the appropiate... (2 Replies)
Discussion started by: hunternjb
2 Replies
ln(1B) SunOS/BSD Compatibility Package Commands ln(1B)
NAME
ln - make hard or symbolic links to files
SYNOPSIS
/usr/ucb/ln [-fs] filename [linkname]
/usr/ucb/ln [-fs] pathname... directory
DESCRIPTION
The /usr/ucb/ln utility creates an additional directory entry, called a link, to a file or directory. Any number of links can be assigned
to a file. The number of links does not affect other file attributes such as size, protections, data, etc.
filename is the name of the original file or directory. linkname is the new name to associate with the file or filename. If linkname is
omitted, the last component of filename is used as the name of the link.
If the last argument is the name of a directory, symbolic links are made in that directory for each pathname argument; /usr/ucb/ln uses the
last component of each pathname as the name of each link in the named directory.
A hard link (the default) is a standard directory entry just like the one made when the file was created. Hard links can only be made to
existing files. Hard links cannot be made across file systems (disk partitions, mounted file systems). To remove a file, all hard links
to it must be removed, including the name by which it was first created; removing the last hard link releases the inode associated with the
file.
A symbolic link, made with the -s option, is a special directory entry that points to another named file. Symbolic links can span file sys-
tems and point to directories. In fact, you can create a symbolic link that points to a file that is currently absent from the file sys-
tem; removing the file that it points to does not affect or alter the symbolic link itself.
A symbolic link to a directory behaves differently than you might expect in certain cases. While an ls(1) on such a link displays the
files in the pointed-to directory, an `ls -l' displays information about the link itself:
example% /usr/ucb/ln -s dir link
example% ls link
file1 file2 file3 file4
example% ls -l link
lrwxrwxrwx 1 user 7 Jan 11 23:27 link -> dir
When you use cd(1) to change to a directory through a symbolic link, you wind up in the pointed-to location within the file system. This
means that the parent of the new working directory is not the parent of the symbolic link, but rather, the parent of the pointed-to direc-
tory. For instance, in the following case the final working directory is /usr and not /home/user/linktest.
example% pwd
/home/user/linktest
example% /usr/ucb/ln -s /var/tmp symlink
example% cd symlink
example% cd ..
example% pwd
/usr
C shell user's can avoid any resulting navigation problems by using the pushd and popd built-in commands instead of cd.
OPTIONS
-f Force a hard link to a directory. This option is only available to the super-user, and should be used with extreme caution.
-s Create a symbolic link or links.
USAGE
See largefile(5) for the description of the behavior of ln when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
EXAMPLES
Example 1 The /usr/ucb/ln command
The commands below illustrate the effects of the different forms of the /usr/ucb/ln command:
example% /usr/ucb/ln file link
example% ls -F file link
file link
example% /usr/ucb/ln -s file symlink
example% ls -F file symlink
file symlink@
example% ls -li file link symlink
10606 -rw-r--r-- 2 user 0 Jan 12 00:06 file
10606 -rw-r--r-- 2 user 0 Jan 12 00:06 link
10607 lrwxrwxrwx 1 user 4 Jan 12 00:06 symlink -> file
example% /usr/ucb/ln -s nonesuch devoid
example% ls -F devoid
devoid@
example% cat devoid
devoid: No such file or directory
example% /usr/ucb/ln -s /proto/bin/* /tmp/bin
example% ls -F /proto/bin /tmp/bin
/proto/bin:
x* y* z*
/tmp/bin:
x@ y@ z@
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO
cp(1), ls(1), mv(1), rm(1), link(2), readlink(2), stat(2), symlink(2), attributes(5), largefile(5)
NOTES
When the last argument is a directory, simple basenames should not be used for pathname arguments. If a basename is used, the resulting
symbolic link points to itself:
example% /usr/ucb/ln -s file /tmp
example% ls -l /tmp/file
lrwxrwxrwx 1 user 4 Jan 12 00:16 /tmp/file -> file
example% cat /tmp/file
/tmp/file: Too many levels of symbolic links
To avoid this problem, use full pathnames, or prepend a reference to the PWD variable to files in the working directory:
example% rm /tmp/file
example% /usr/ucb/ln -s $PWD/file /tmp
lrwxrwxrwx 1 user 4 Jan 12 00:16 /tmp/file ->
/home/user/subdir/file
SunOS 5.11 11 Mar 1994 ln(1B)