07-28-2013
Many thanks, the code worked just perfect!
Hopefully I will be able to learn this well one day..
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I need a hand with this simple script,
in Unix i have a variable called portal:
$ echo $portal
chu0
when i use awk this variable is not recognized. How can i make awk recognize and print the value of this variable, since the output is not shown i.e.
awk '
BEGIN {printf("%4s\t%14s\n",... (3 Replies)
Discussion started by: alexcol
3 Replies
2. Shell Programming and Scripting
when I execute this awk stmt ..
awk "/log_directory/ { print $5}" /opt/dba/oraadmin/tools/tmp_purge_op.log
it's returning the whole line as ..
IRMD118_LISTENER1 parameter "log_directory" set to /opt/oracle/10.2/network/log/
my expected output is : /opt/oracle/10.2/network/log
what... (7 Replies)
Discussion started by: talashil
7 Replies
3. Shell Programming and Scripting
Whats the syntax to find all lines that matches a text and print out specific fields after the match?
ex:
1: some random text
2: Full name: John E. Smith
3: some random text
4: Full name: Mary J. Lue
5: some random text
So I'd like to print out First names or last names or everything... (2 Replies)
Discussion started by: linuxdude
2 Replies
4. Shell Programming and Scripting
Hi,
I just don't understand awk. I think I'm close here but can someone give me a hand to finish this little parsing routine ?
the input file is formatted like this:
District 2502110
Gsub 2384889
Gsub 1428180
District 2502220
Gsub 1466390
Gsub 1466389
Gsub 1466388
Gsub 1466386
Gsub... (4 Replies)
Discussion started by: fwellers
4 Replies
5. UNIX for Dummies Questions & Answers
awk '!_++'
Most importantly, I want to know what the underscore does "!_"
But ideally, please breakdown the whole thing. It is supposed to remove duplicate lines when found in a file. (1 Reply)
Discussion started by: glev2005
1 Replies
6. Shell Programming and Scripting
Hello;
Trying to figure out how to keep just the contents between the two search lines:
awk '/regexp_1/ ,/regexp_2/'
I do not want lines containing regexp_1 and regexp_2 in the output.
Thank you for any ideas
Video tutorial on how to use code tags in The UNIX and Linux Forums. (5 Replies)
Discussion started by: delphys
5 Replies
7. Shell Programming and Scripting
Hello;
I need to print two previous lines after searching for a reg exp:
awk '/haywood/'
should produce the following
===================
p9J46THe020804 89922 Tue Oct 18 21:06 MAILER-DAEMON
(host map: lookup (haywood.com): deferred)
... (1 Reply)
Discussion started by: delphys
1 Replies
8. Shell Programming and Scripting
Hi,
I'm new to AWK and I'm having problems comparing a field to a string variable.
/ARTIST/ {x = $2}
$1 ~ x {print $0}My code tries to find a record with the string "ARTIST". Once it finds it, it stores the second field of the record into a variable. I don't know what the problem is for the... (7 Replies)
Discussion started by: klusps
7 Replies
9. Shell Programming and Scripting
Hi,
I have a file such that:
40454,31,48,4,1304.967741935484,1
31708,25,48,4,1268.32,1
20900,64501,671,788,0.3240259840932699,0
20137,51358,834,743,0.3920908135051988,0
I want to replace the 6th column by "ones" if it is 1, and with "zeros" if it is 0.
Thanks. (6 Replies)
Discussion started by: shekhar2010us
6 Replies
10. Shell Programming and Scripting
Hey all,
so I'm using AWK in a project at work, to generate xml from csv. So far things are going relatively smoothly, but I have one thing I can't figure out.
For every field in each row, I must generate <entry name=KWNamex>Field</entry>
Then I will need to pull data from a second file... (6 Replies)
Discussion started by: Parrakarry
6 Replies
LEARN(1) General Commands Manual LEARN(1)
NAME
learn - computer aided instruction about UNIX
SYNOPSIS
learn [ -directory ] [ subject [ lesson ] ]
DESCRIPTION
Learn gives Computer Aided Instruction courses and practice in the use of UNIX, the C Shell, and the Berkeley text editors. To get started
simply type learn. If you had used learn before and left your last session without completing a subject, the program will use information
in $HOME/.learnrc to start you up in the same place you left off. Your first time through, learn will ask questions to find out what you
want to do. Some questions may be bypassed by naming a subject, and more yet by naming a lesson. You may enter the lesson as a number
that learn gave you in a previous session. If you do not know the lesson number, you may enter the lesson as a word, and learn will look
for the first lesson containing it. If the lesson is `-', learn prompts for each lesson; this is useful for debugging.
The subject's presently handled are
files
editor
vi
morefiles
macros
eqn
C
There are a few special commands. The command `bye' terminates a learn session and `where' tells you of your progress, with `where m'
telling you more. The command `again' re-displays the text of the lesson and `again lesson' lets you review lesson. There is no way for
learn to tell you the answers it expects in English, however, the command `hint' prints the last part of the lesson script used to evaluate
a response, while `hint m' prints the whole lesson script. This is useful for debugging lessons and might possibly give you an idea about
what it expects.
The -directory option allows one to exercise a script in a nonstandard place.
FILES
/usr/share/learn subtree for all dependent directories and files
/usr/tmp/pl* playpen directories
$HOME/.learnrc startup information
SEE ALSO
csh(1), ex(1)
B. W. Kernighan and M. E. Lesk, LEARN - Computer-Aided Instruction on UNIX
BUGS
The main strength of learn, that it asks the student to use the real UNIX, also makes possible baffling mistakes. It is helpful, espe-
cially for nonprogrammers, to have a UNIX initiate near at hand during the first sessions.
Occasionally lessons are incorrect, sometimes because the local version of a command operates in a non-standard way. Occasionally a lesson
script does not recognize all the different correct responses, in which case the `hint' command may be useful. Such lessons may be skipped
with the `skip' command, but it takes some sophistication to recognize the situation.
To find a lesson given as a word, learn does a simple fgrep(1) through the lessons. It is unclear whether this sort of subject indexing is
better than none.
Spawning a new shell is required for each of many user and internal functions.
The `vi' lessons are provided separately from the others. To use them see your system administrator.
7th Edition October 22, 1996 LEARN(1)