10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hello
I want to check on first column duplicates and print the unique first and second columns
My trial output is not generating what I needed, i.e the second column.
thanks in advance (5 Replies)
Discussion started by: bhargavpbk88
5 Replies
2. OS X (Apple)
Hello,
I have recently imported all my scripts into OS X. There is one unix command that is problematic in the new environment:
sort temp7.txt | uniq -u -w4 > temp8.txt
The system doesn't seem to like the -w tag. Is there an alternative command?
Here is the objective:
Data:
1234 aaa... (1 Reply)
Discussion started by: palex
1 Replies
3. Shell Programming and Scripting
I have a master list of servers. I also have a list of servers I'm not supposed to touch. I'm trying to filter out the list servers that I'm not supposed to touch from the master list of servers, so I will have a "master list of servers I can touch". When I try to filter these I'm not getting... (4 Replies)
Discussion started by: MaindotC
4 Replies
4. Shell Programming and Scripting
Hi
I'm having a file (extract.txt) which contains lots of repeated values i want to extract it only with unique values,while am using the the uniq command
It result's with 1510 lines this too have the duplicates,pls help me on this.
I attached my extract.txt file as attachment here.
... (2 Replies)
Discussion started by: thelakbe
2 Replies
5. Shell Programming and Scripting
When I do uniq -c on a list of sorted numbers,
for eg:
1
1
2
2
2
3
3
4
It outputs 2 1
3 2
2 3
1 4.
Now, is there a way to sort on the column that "uniq -c" produced? (2 Replies)
Discussion started by: prasanna1157
2 Replies
6. Shell Programming and Scripting
Hi folks,
Below is the content of a file 'tmp.dat', and I want to keep the uniq record (key by first column). However, the uniq record should be the last record.
302293022|2|744124889|744124889
302293022|3|744124889|744124889
302293022|4|744124889|744124889
302293022|5|744124889|744124889... (4 Replies)
Discussion started by: ChicagoBlues
4 Replies
7. Shell Programming and Scripting
I call....
cat 1.txt | uniq -c
Sample of whats in 1.txt
vmstat
cd
exit
w
cd
cd
cd
newgrp
xinit
f
cd
cd
cd
rlogin (2 Replies)
Discussion started by: Bandit390
2 Replies
8. UNIX for Dummies Questions & Answers
Dear all,
It's not entirely clear to me from manpage the difference between them.
Why we still need "-u" flag?
- monkfan (3 Replies)
Discussion started by: monkfan
3 Replies
9. Shell Programming and Scripting
How can I use uniq on a certain field or what else could I use? If I want to use uniq on the second field and the output would remove one of the lines with a 5.
bob 5 hand
jane 3 leg
jon 4 head
chris 5 lungs (1 Reply)
Discussion started by: Bandit390
1 Replies
10. Shell Programming and Scripting
Hi,
I'd like to have a script what takes the 'who' output and grabs the user names and outputs just the user name, and no duplicates.
I know I could do something like:
who | awk '{print $1}' | uniq -u
but I'd like to stay away from using the 'uniq' comand and just use awk.
Thanks (5 Replies)
Discussion started by: lochraven
5 Replies
learn(1) General Commands Manual learn(1)
NAME
learn - Provides computer-aided instruction for the C shell
SYNOPSIS
learn [-directory] [subject] [lesson]
The learn command provides computer-aided instruction courses and practice in the use of Tru64 UNIX.
OPTIONS
Allows you to exercise a script in a nonstandard place.
DESCRIPTION
To get started, enter learn; if this is the first time that you are invoking the learn command, you are guided through a series of ques-
tions to determine what type of instruction you want to receive.
If you have used learn before and left your last session without completing a subject, the program uses information in $HOME/.learnrc to
start you up in the same place you left off.
To bypass questions, enter a subject or lesson. In order to enter a lesson, you must know the lesson number that you received in a previ-
ous learn command session. If you do not know the lesson number, enter the lesson number as a subject. The learn command searches for the
first lesson containing the subject you specified. If the lesson is a - (dash), learn prompts for each lesson; this is useful for debug-
ging.
You can specify the following subjects:
files editor vi morefiles macros eqn C
SUBCOMMANDS
There are a few special commands. The bye command terminates a learn session, and the where command tells you of your progress (where m
tells you more.) The again command redisplays the text of the lesson and again lesson lets you review lesson. The hint command prints the
last part of the lesson script used to evaluate a response, while hint m prints the entire lesson script. This is useful for debugging
lessons and might possibly give you an idea about what is expected.
EXAMPLES
To take the online lesson about files, enter: learn files
You are then prompted for further input.
FILES
Playpen directories. Start-up information.
SEE ALSO
Commands: csh(1), ex(1)
learn(1)