10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Peers,
I was in process of building a script that connects to salesforce using jdbc and pull the data using spark and process in hive table. During this process I have encountered a problem where and variable assigned with hadoop command that list files in Azure Data lake is not parsing the... (2 Replies)
Discussion started by: jg355187
2 Replies
2. Shell Programming and Scripting
I have a CSV file with hdfs directories, hive tables and hbase tables.
1. first column - hdfs directories
2. second column - hive tables
3. third column - hbase tables
I have to check the csv file and look for the first column and delete the hdfs directory from the hdfs path, now... (2 Replies)
Discussion started by: shivamayam
2 Replies
3. UNIX for Beginners Questions & Answers
Hi,
I am unable to change the permissions for a directory in HDFS.
from what i understand acl's supersede all other permissions. even if a directory is not owned by me, but there is an acl for me with rwx then i must be able to change the permissions of that directory.
Please find the... (8 Replies)
Discussion started by: desind
8 Replies
4. UNIX for Beginners Questions & Answers
I am learning Hadoop. As a part of that, Hdfs - Hadoop distributed file system has commands similar to unix where we can create,copy,move files from unix/linux file system to HDFS.
My question is
1) how two file systems (unix and hdfs) can coexist on thr same partition..
2)What if block... (1 Reply)
Discussion started by: Narendra Eliset
1 Replies
5. UNIX for Advanced & Expert Users
I am learning Hadoop. As a part of that, Hdfs - Hadoop distributed file system has commands similar to unix where we can create,copy,move files from unix/linux file system to HDFS.
My question is
1) how two file systems (unix and hdfs) can coexist on thr same partition..
2)What if block used... (0 Replies)
Discussion started by: Narendra Eliset
0 Replies
6. Shell Programming and Scripting
Hi All ,
I am facing one issue here...I have a huge file in hadoop file system.Some disk space issues are thr ,thatswhy I want to copy 1st 100 records from hdfs to local unix.I tried below command but it is no working .Its giving error like cat: Unable to write to output stream.if any one can... (2 Replies)
Discussion started by: STCET22
2 Replies
7. Shell Programming and Scripting
Hi All ,
I am very new to unix script.I am aware of unix commands but never put together in unix script level.If any one can suggest me technical guidance in the below scenario that will highly beneficial.
Data have been already migrated from mainframe to Hadoop file system(HDFS).HDFS server... (15 Replies)
Discussion started by: STCET22
15 Replies
8. Linux
Hi everyone,
Almost everything is in the title!
Which partitions do you keep?
Which partitions do you reformat, while doing a clean install?
Personaly, I never format /var and /home partitions when I update to latest linux distribution.
It has been working quite ok up to now, but I was... (3 Replies)
Discussion started by: freddie50
3 Replies
9. Shell Programming and Scripting
OK, I am a little new to AIX 5.3 and also to scripting. I have a shell script that I wrote and am having difficulty pushing specific files by the system date. Here is my script:
#!/usr/bin/sh
RSYNC=/usr/local/bin/rsync
SSH=/usr/local/bin/ssh
KEY=<path> somekey.key
RUSER=mike... (4 Replies)
Discussion started by: tfort73
4 Replies
10. Solaris
Dear All,
I am going to examine SA202 but I got SA-202-S10 revision A.1 so it might be out of date.
Who has "Solaris 10 Advanced System Administration(SA-202-S10)" latest revision document? Could you share it ?
Thank you in advance (2 Replies)
Discussion started by: unitipon
2 Replies
uux(1c) uux(1c)
Name
uux - unix to unix command execution
Syntax
uux [-] command-string
Description
The command gathers 0 or more files from various systems, executes a command on a specified system, and sends standard output to a file on
a specified system.
The command-string is made up of one or more arguments that look like a shell command line, except that the command and file names may be
prefixed by system-name!. A null system-name is interpreted as the local system.
File names may be one of the following:
o A pathname
o A pathname preceded by ~xxx, where xxx is a userid on the specified system and is replaced by that user's login directory
o Any other syntax that is prefixed by the current directory.
For example, the following command line gets the f1 files from the usg and pwba machines, executes a command and puts the results in
f1.diff in the local directory.
uux "!diff usg!/usr/dan/f1 pwba!/a4/dan/f1 > !f1.diff"
When using special shell characters such as <>'!, you should either quote the entire command-string, or you should quote the special char-
acters as individual arguments.
The command attempts to get all files to the execution system. If both the file and command are located on different remote sites, the
file is first brought to the local system and is then transferred to the execution system.
If you want to include files as arguments to a command, but you do not want those files to be processed by enclose the filename in paren-
theses. For example:
uux a!uucp b!/usr/file (c!/usr/file)
The previous example sends a command to system The is transferred from system to the local system, and then is passed to system When
arrives at system the command executes and sends to system
If the request is not allowed on the remote system, the command notifies you. This response is sent through remote mail from the remote
machine.
Options
-c, -l
Do not copy local file to the spool directory for transfer to the remote machine. This is the default.
-ggrade
Specifies the grade which is a single letter or number from 0 to 9, A to Z, or a to z. The highest grade is 0, the lowest grade is z.
The default is A. Lower grades should be specified for high-volume jobs, such as news.
-n Sends no notification to user.
-p, -
Reads stdin.
-r Queues the job, but does not start the file transfer.
-xdebug
Produces debugging output on stdout. The debug option is a number between 0 and 9. Higher numbers provide more detailed information.
Debugging is permitted only for those users with read access to
-z Notify the user if the command fails.
Warning
An installation may limit the list of commands executable on behalf of an incoming request from Typically, a restricted site permits little
other than the receipt of mail through
Restrictions
Only the first command of a shell pipeline may have a system-name!. All other commands are executed on the system of the first command.
The use of the shell metacharacter asterisk (*) shell metacharacter may not behave as you expect. The shell tokens (<< >>) are not imple-
mented.
You are not notified when execution on a remote machine is denied. Only commands listed in on the remote system are executed at the remote
system.
Files
/usr/spool/uucp spool directory
/usr/lib/uucp/* other data and programs
See Also
uucp(1c)
"Uucp Implementation Description" ULTRIX Supplementary Documents Vol. III: System Manager
uux(1c)