Connect:Direct or NDM (Network data mover) is file transfer program, which copy file from source server to target. We can use this in both Mainframe and Mid-range to transfer file. It uses TCP/IP to transfer file and more made file transfer routine and reliable. Following a step in NDM to tranfer file. We are using a unix system to receive data feeds from a mainframe system for our input loader jobs. Mainframe is using NDM to transfer the files to us. The records in the data file are suppose to be fixed length but once in a while the length some how gets trimmed for.
Ninja Download Manager
Blazingly Fast Downloads
Increase download speeds by up to 20 times by using multiple simultaneous connections
Pause and Resume Downloads
Resume your downloads after stopping without having to start from the beginning
Add Now, Download Later
Downloads can be saved to your download list for downloading later
Sequential File Writing
Drag and Drop
Add Multiple Download
Import lists of downloads in one screen using NDM’s powerful multi add screen
Schedule Downloads
Download Queues
Speed Control
Connection Control
Password Manager
Proxy Support
Clipboard Monitor
Easily add downloads to NDM by copying them to your clipboard
Hands down, the best free download manager aviable right now. It has all the features I want – grouping, multiple connections, clipboard integration, speed limiting.It’s ui, while small, is intuitive easy to navigate. It works great, I haven’t encountered any problems so far.
cp is one of the basic command in Unix. You already know that it is used to copy one or more files or directories from source to destination.
While this tutorial is for beginners, it is also helpful for everybody to quickly review various cp command options using some practical examples.
Even if you are using cp command all the times, probably one or more examples explained below might be new to you.
The general form of copy command:
1. Copy a file or directory from source to destination
To copy a file, you need to pass source and destination to the copy command. The following example copies the file from project/readme.txt to projectbackup/readme-new.txt
Ndm File Transfer Tutorial Unix Pdf
If you want to copy a file from one folder to another with the same name, just the destination directory name is good enough as shown below.
A directory (and all its content) can be copied from source to destination with the recursive option -r as shown below:
2. Copy multiple files or directories
You can copy more than one file from source to destination as shown below:
If the source files has a common pattern, use wild-cards as shown below. In this example, all c extension files gets copied to /home/thegeekstuff/projectbackup/src/ directory.
Copy multiple directories as shown below.
3. Backup before copying into a destination
In case if the destination file is already present with the same name, then cp allows you to backup the destination file before overwriting it.
In this example, the readme.txt exists in both project/ and projectbackup/ directory, and while copying it from project/ to projectbackup/, the existing readme.txt is backed up as shown below:
The existing file has been moved to readme.txt~ and the new file copied as readme.txt as shown below.
Talking about backup, it is important for you to understand how rsync command works to backup files effectively.
4. Preserve the links while copying
Ndm File Transfer Tutorial Unix File
When you execute the cp command, if the source is a link file, then the actual file gets copied and not the link file. In case if you only want to copy the link as it is, specify option -d as shown below:
The following shows that without option -d, it will copy the file (and not the link):
To preserve the link while copying, do the following:
5. Don’t overwrite an existing file
If you want to copy only when the destination file doesn’t exist, use option -n as shown below. This won’t overwrite the existing file, and cp command will return with success exit code as shown below:
As you see below, the destination file didn’t get overwritten.
6. Confirm before overwriting (interactive mode)
When you use -i option, it will ask for confirmation before overwriting a file as shown below.
7. Create hard link to a file (instead of copying)
When you execute cp command, it is possible to create a hard link of the file (instead of copying the file). The following example creates the hard link for sample.txt file into directory test/,
As seen above, the test/sample.txt is a hard linked file to sample.txt file and the inode of both files are the same.
8. Create Soft link to a file or directory (instead of copying)
When you execute cp command, it is possible to create a soft link to a file or directory. In the following example, a symbolic link gets created for libFS.so.6.0.0 as libFS.so,
9. Preserve attributes of file or directory while copying
Using -p option, you can preserve the properties of a file or directory as shown below:
It is also possible to preserve only the required properties like mode, ownership, timestamps, etc.,
The following example preserves the mode of a file while copying it:
10. Copy only when source file is newer than the destination or missing
Copy doesn’t take much time for a small file, but it may take considerable amount of time when a huge file is copied. So, while copying a big file, you may want to make sure you do it only when the source file is newer than the destination file, or when the destination file is missing using the option -u as shown below.
In this example, the two files LICENSE and readme.txt will be copied from project/ to projectbackup/. However, the LICENSE file already exists in projectbackup/ directory and that is newer than the one in the project/ directory.
So, in this example, there is no need to copy LICENSE file again to projectbackup/ directory. This is automatically taken care by cp command, if you use -u option as shown below. In the below example, only readme.txt file got copied as indicated by the time-stamp on the file.