I was wondering if anyone has used VMWare Workstation? I wanted to practice and learn Unix in a networking environment and have my own home lab. However room and money prevent me from buying several computers to do so. Any input would help thank you. (0 Replies)
In the following Shell Script can anyone help me?
What are the total scripts?
What are the total binaries?
What are the total files?
#!/bin/sh
GREP="/bin/grep -q"
if ; then
if ; then
for | in ${I}/* ;do
file ${I} | ${GREP} "executable" && echo "${I} is a binary"
file ${I} |... (1 Reply)
heres the lab i did everything but when i issue the automated lab check.
but it gives me this everytime
''you are missing the /home/smichaels/Labs/lab2b/group file, please create it as per step 12 of the lab.
once you have corrected this problem, re-run the uli101.023 program''
im... (1 Reply)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
''you are missing the /home/smichaels/Labs/lab2b/group file, please create it as per step 12 of the lab.
once... (4 Replies)
hi.. this is shell scripting lab15.sh
i dont understand this lab i am at the screen shot part. i was wondering if someone can take a quick look at this lab i have linked the doc below. i dont know where to start
i have did the
Required Errorlevels
Errorlevel # but dont... (1 Reply)
Write a script that copies the file tree (including subdirectories) in your home directory. As the initial directory to take the directory / usr / share / doc, as the destination directory using the directory $ {HOME} / doc.
Write a script corresponding to paragraph 1. Additional conditions: a)... (1 Reply)
So, I have a kindof off the wall question. I've got 10 computers which I inherited from a charter school that closed that I did their admin work for. They're not servers, just workstations with ubuntu server running on them. I had them all up and running at one point... but crimineys the load on my... (8 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Here are my directions. I am pretty sure I am doing this right, but I just want someone more experienced to look... (4 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Create a group id with your last name. Create 2 user IDs using your last name and the numbers 1 and 2. For each... (3 Replies)
Hello,
Do you have any suggestion of any tool (web based preferably) about how to organize a lab environment?
Now i save some info in excel sheet (one rack per column) , but i was thinking if any software exists.
Thanks in advance! (2 Replies)
Discussion started by: @dagio
2 Replies
LEARN ABOUT CENTOS
dblink_build_sql_update
DBLINK_BUILD_SQL_UPDATE(3) PostgreSQL 9.2.7 Documentation DBLINK_BUILD_SQL_UPDATE(3)NAME
dblink_build_sql_update - builds an UPDATE statement using a local tuple, replacing the primary key field values with alternative supplied
values
SYNOPSIS
dblink_build_sql_update(text relname,
int2vector primary_key_attnums,
integer num_primary_key_atts,
text[] src_pk_att_vals_array,
text[] tgt_pk_att_vals_array) returns text
DESCRIPTION
dblink_build_sql_update can be useful in doing selective replication of a local table to a remote database. It selects a row from the local
table based on primary key, and then builds a SQL UPDATE command that will duplicate that row, but with the primary key values replaced by
the values in the last argument. (To make an exact copy of the row, just specify the same values for the last two arguments.) The UPDATE
command always assigns all fields of the row -- the main difference between this and dblink_build_sql_insert is that it's assumed that the
target row already exists in the remote table.
ARGUMENTS
relname
Name of a local relation, for example foo or myschema.mytab. Include double quotes if the name is mixed-case or contains special
characters, for example "FooBar"; without quotes, the string will be folded to lower case.
primary_key_attnums
Attribute numbers (1-based) of the primary key fields, for example 1 2.
num_primary_key_atts
The number of primary key fields.
src_pk_att_vals_array
Values of the primary key fields to be used to look up the local tuple. Each field is represented in text form. An error is thrown if
there is no local row with these primary key values.
tgt_pk_att_vals_array
Values of the primary key fields to be placed in the resulting UPDATE command. Each field is represented in text form.
RETURN VALUE
Returns the requested SQL statement as text.
NOTES
As of PostgreSQL 9.0, the attribute numbers in primary_key_attnums are interpreted as logical column numbers, corresponding to the column's
position in SELECT * FROM relname. Previous versions interpreted the numbers as physical column positions. There is a difference if any
column(s) to the left of the indicated column have been dropped during the lifetime of the table.
EXAMPLES
SELECT dblink_build_sql_update('foo', '1 2', 2, '{"1", "a"}', '{"1", "b"}');
dblink_build_sql_update
-------------------------------------------------------------
UPDATE foo SET f1='1',f2='b',f3='1' WHERE f1='1' AND f2='b'
(1 row)
PostgreSQL 9.2.7 2014-02-17 DBLINK_BUILD_SQL_UPDATE(3)