1. Shell Programming and Scripting

Hi, May I know, if a pipe separated File is large, what is the best method to calculate the unique row count of 3rd column and get a list of unique value of the 3rdcolum? Thanks in advance! (20 Replies)

2. Shell Programming and Scripting

I'm loading multiple delimited files into an Oracle DB using sqlldr on Unix. I would like to get only the most recent record per each unique key. There may be multiple updates for each key, but I only want the most recent one. There is a date column in my delimited files, so I'm using cat to... (2 Replies)

3. UNIX for Dummies Questions & Answers

if i am in /tmp file, and i have a few DIRs under /tmp. i want to find the biggest and most recent files (from 7 days ago) in /tmp and subfolders. (3 Replies)

4. Shell Programming and Scripting

Input file --------- 12:name1:|host1|host1|host2|host1 13:name2:|host1|host1|host2|host3 14:name3: ...... Required output --------------- 12:name1:host1(2)|host1(1) 13:name2:host1(2)|host2(1)|host3(1) 14:name3: where (x) - Count how many times field appears in last column ... (3 Replies)

5. Shell Programming and Scripting

Hello, i develop a shell unix program and i have a csv file. every time we have 5 identical lines in the first 3 columns in the fourth column can be different and the 5th too. In the 5th I have a date in yyyy / mm / dd. I want to do a sort on the 5 lines and keep only the line where there is the... (7 Replies)

6. Shell Programming and Scripting

I have a file with contents below 123,502 123,506 123,702 234,101 235,104 456,104 456,100 i want to sort such that i get a unique value in column A, and for those with multiple value in A, i want the lowest value in B. output should be 123,502 234,101 235,104 456,100 (3 Replies)

7. Shell Programming and Scripting

I have another file with three columns A,B,C as below 123,1,502 123,2,506 123,3,702 234,4,101 235,5,104 456,6,104 456,7,100 i want to sort such that i get a unique value in column A, and for those with multiple value in A, i want the lowest value in C. output should be Code:... (3 Replies)

8. UNIX for Dummies Questions & Answers

I would like to print unique lines without sort or unique. Unfortunately the server I am working on does not have sort or unique. I have not been able to contact the administrator of the server to ask him to add it for several weeks. (7 Replies)

9. Shell Programming and Scripting

Hello Team, I need your help on the following: My input file a.txt is as below: 3330690|373846|108471 3330690|373846|108471 0640829|459725|100001 0640829|459725|100001 3330690|373847|108471 Here row 1 and row 2 of column 1 are identical but corresponding column 2 value are... (4 Replies)

10. Shell Programming and Scripting

Hi, I have an input file that I have sorted in a previous stage by $1 and $4. I now need something that will take the first record from each group of data based on the key being $1 Input file 1000AAA|"ZZZ"|"Date"|"1"|"Y"|"ABC"|""|AA 1000AAA|"ZZZ"|"Date"|"2"|"Y"|"ABC"|""|AA... (2 Replies)