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:
I have a simple txt files that looks something like this (The title is a part of the text file)
Here are my questions:
How would I ONLY print the names of students who have a score better than 85?
How would I sort the students based on score: only outputting Student Name and Score?
2. Relevant commands, code, scripts, algorithms:
none
3. The attempts at a solution (include all code and scripts):
I understand how to sort based on grades. But I don't understand how to output based on a condition. I have tried using awk, but I'm having major trouble.
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
University of Texas
Austin
United States
Erozner
CS108
cs.utexas.edu/~erozner/cs108/
Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
Last edited by DukeNuke2; 10-17-2010 at 04:29 PM..
In the homework forum it is better to offer advice, education and explanation than simple "one-liner" solutions. Without that, this sub-forum serves no purpose.
Ooops, ok sorry.
Last edited by ctsgnb; 10-17-2010 at 08:56 PM..
Reason: Removed code
How would I ONLY print the names of students who have a score better than 85?
To print the student names with score greater than 85:
The code means:
- if the current record number (NR) is greater than 2 (skip the header*) and (logical AND - &&) the value of the last field ($NF - NF contains the number of fields, $NF expands to the value of the last field) is greater than 85, print the second and the third field (the student name).
* I'm skipping the header just in case its last field contains a number.
For names that consist of more than two words:
In this case you should loop skipping the first and the last field - for (i = 1; ++i < NF;) ...
Quote:
How would I sort the students based on score: only outputting Student Name and Score?
With GNU awk:
WHINY_USERS is a GNU awk (gawk) magic variable that sorts the array keys. There is a catch of course,
they are strings, so they are sorted asciibetically, not in numeric order (100 is less than 20). You could avoid this by
left-padding the numbers with spaces. (left as an exercise).
For more complicated names:
Otherwise just print the users and names and then sort them with the external sort program.
Here, as in the previous example, I just added a loop, to print correctly the names consisting of more than two words.
P.S. I'm not explaining the basics of the awk's pattern/action paradigm on purpose, I cannot do it better than the gawk author (just google for Effective gawk Programming).
Good evening, Im newbie at unix specially with awk
From an scheduler program called Autosys i want to extract some data reading an inputfile that comprises jobs names, then formating the output to columns for example
1.
This is the inputfile:
$ more MapaRep.txt
ds_extra_nikira_usuarios... (18 Replies)
Hi,
I am trying to pass awk field to a command line executed within awk (need to convert a timestamp into formatted date).
All my attempts failed this far.
Here's an example.
It works fine with timestamp hard-codded into the command
echo "1381653229 something" |awk 'BEGIN{cmd="date -d... (4 Replies)
Hello experts,
I'm stuck with this script for three days now. Here's what i need.
I need to split a large delimited (,) file into 2 files based on the value present in the last field.
Samp: Something.csv
bca,adc,asdf,123,12C
bca,adc,asdf,123,13C
def,adc,asdf,123,12A
I need this split... (6 Replies)
Hi,
I have a situation to compare one file, say file1.txt with a set of files in directory.The directory contains more than 100 files.
To be more precise, the requirement is to compare the first field of file1.txt with the first field in all the files in the directory.The files in the... (10 Replies)
I have two files which I would like to compare and then manipulate in a way.
File1:
pictures.txt 1.1 1.3
dance.txt 1.2 1.4
treehouse.txt 1.3 1.5
File2:
pictures.txt 1.5 ref2313 1.4 ref2345 1.3 ref5432 1.2 ref4244
dance.txt 1.6 ref2342 1.5 ref2352 1.4 ref0695 1.3 ref5738 1.2... (1 Reply)
Hi
I have many problems with a script. I have a script that formats a text file but always prints the same error when i try to execute it
The code is that:
{
if (NF==17){
print $0
}else{
fields=NF;
all=$0;
while... (2 Replies)
Hi Experts,
I am adding a column of numbers with awk , however not getting correct output:
# awk '{sum+=$1} END {print sum}' datafile
2.15291e+06
How can I getthe output like : 2152910
Thank you..
# awk '{sum+=$1} END {print sum}' datafile
2.15079e+06 (3 Replies)
Actually I got a list of file end with *.txt
I want to use the same command apply to all the *.txt
Thus I try to find out the fastest way to write those same command in a script and then want to let them run automatics.
For example:
I got the file below:
file1.txt
file2.txt
file3.txt... (4 Replies)