Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

loop help

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting loop help
# 1  
Old 02-16-2009
loop help
Hi there,

I have 2 files:

current.uid

5516
5517
5518
5519
5520
5521
5522
5523
5524
5525

user.uid

5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525

Note: user.uid has all the number that current.uid has.

I'd like to loop through current.uid and remove these number in user.uid file and print out the difference in user.uid.

Thanks
# 2  
Old 02-16-2009
Hammer & Screwdriver The comm command might work for you
From the manpage on comm
OPTIONS
The following options are supported:
-1 Suppresses the output column of lines unique to
file1.
-2 Suppresses the output column of lines unique to
file2.
-3 Suppresses the output column of lines duplicated in
file1 and file2.

Code:
> comm -13 file172 file173
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515

# 3  
Old 02-16-2009
Code:
nawk 'FNR==NR {a[$1]; next} !a[$1]' current.uid user.id

# 4  
Old 02-16-2009
Quote:
Originally Posted by vgersh99
Code:
nawk 'FNR==NR {a[$1]; next} !a[$1]' current.uid user.id

it prints out the output of user.uid..which is not what I wanted.

Thanks btw
# 5  
Old 02-16-2009
Quote:
Originally Posted by kkkk
it prints out the output of user.uid..which is not what I wanted.

Thanks btw
Your explanation was not clear....
try switching the order of the input files:
Code:
nawk 'FNR==NR {a[$1]; next} !a[$1]' user.id current.id

# 6  
Old 02-16-2009
sorry for the confusing...

awk 'FNR==NR{a[$0]++; next} !a[$0]' current.uid user.uid

is what I wanted..

Thanks for your help.
# 7  
Old 02-17-2009
$ cat current.uid user.uid | sort -n | uniq -u
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

For loop or while loop from a text file

Hi all, i developed a script to measure the uptime of a process in a Solaris 10/11 environments. All is well, but i came across a situation where there are multiple processes of the same name. Basically i have the following result file: beVWARS 13357 19592122 beVWARS 14329 19591910... (4 Replies)
Discussion started by: nms
4 Replies

2. Shell Programming and Scripting

awk loop using array:wish to store array values from loop for use outside loop

Here's my code: awk -F '' 'NR==FNR { if (/time/ && $5>10) A=$2" "$3":"$4":"($5-01) else if (/time/ && $5<01) A=$2" "$3":"$4-01":"(59-$5) else if (/time/ && $5<=10) A=$2" "$3":"$4":0"($5-01) else if (/close/) { B=0 n1=n2; ... (2 Replies)
Discussion started by: klane
2 Replies

3. Shell Programming and Scripting

Reset while loop to loop same file multiple times

Hi, I want to read file multiple times. Right now i am using while loop but that is not working. ex. While read line do while read line2 do echo stmt1 #processing some data based on data., done < file2.txt done < file1.txt # This will have 10... (4 Replies)
Discussion started by: tmalik79
4 Replies

4. Shell Programming and Scripting

Array Variable being Assigned Values in Loop, But Gone when Loop Completes???

Hello All, Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....? I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping through a string containing some of these "Illegal Characters". Now... (5 Replies)
Discussion started by: mrm5102
5 Replies

5. Shell Programming and Scripting

My for loop decides to become an infinite loop?

Hi, I was debating if I should put this in the dummies or scripts section, I apologize in advance if I chose poorly. Fairly new to Unix and BASH scripting but I thought I made it fairly well given my limited understanding. However, the output indicates that it's looping and I'm ending up with a... (5 Replies)
Discussion started by: gotreef
5 Replies

6. Shell Programming and Scripting

S# in a for loop - concatenate $(loop counter)

Hi, hope I am posting in the right section. My problem is that I have 2 or more arguments passed and I want to check if the arguments passed exists or not. The first argument should not exist and the remaining others should exist. example: ./shells.sh argument1 argument2 argument3 ... (5 Replies)
Discussion started by: fight4love
5 Replies

7. Shell Programming and Scripting

BASH loop inside a loop question

Hi all Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
Discussion started by: rethink
4 Replies

8. Shell Programming and Scripting

Null Handling in Until loop. . .loop won't stop

Hi Im running this script, which is supposed to find the max value build some tables and then stop running once all the tables are built. Thing is , it keeps assigning a null value to $h and then $g is null so it keep building tables i.e. testupdateNUL. How can I stop this? Here is what I have: ... (4 Replies)
Discussion started by: brandono66
4 Replies

9. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends. As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Discussion started by: DeCoTwc
2 Replies

10. Shell Programming and Scripting

Is there a better way I could have run this loop. (For loop with two variables)

Sorry for such a dreadful title, but I'm not sure how to be more descriptive. I'm hoping some of the more gurutastic out there can take a look at a solution I came up with to a problem, and advice if there are better ways to have gone about it. To make a long story short around 20K pieces of... (2 Replies)
Discussion started by: DeCoTwc
2 Replies
Login or Register to Ask a Question