Is there any way to remove the duplicate entries in a bash script?

Is there any way to remove the duplicate entries in a bash script?

Is there any possible way to remove the duplicate entries using a Bash script? It deletes duplicate, consecutive lines from a file (emulates “uniq”). First line in a set of duplicate lines is kept, rest are deleted. This variation edits the file in-place, and makes a backup input.bak

When to remove lines based on duplicates within one column?

I have large 3-column files (~10,000 lines) and I would like to remove lines when the contents of the third column of that line appear in the third column of another line. The files’ sizes make sort a bit cumbersome, and I can’t use something like the below code because the entire lines aren’t identical; just the contents of column 3.

How to delete rows based in a column value?

Using a bash shell script based in Linux, I’d like to delete all the rows based on the value of column 1 (The one with the long number). Having into consideration that this number is a variable number

Is there a way to delete the first column?

Based on your updated input the problem is the initial spaces that cut treats as multiple columns. One way to address is to remove them first before feeding to cut or use the awk alternative above which will work in this case as well. You can use cut command with –complement option: This will output all columns except the first one.

How to remove duplicate values from a comma separated string?

One approach is to split the values up, eliminate the duplicates, and then put them back together. The common method to tokenize a delimited string is with regexp_substr and a connect by clause. Using a bind variable with your string to make the code a bit clearer:

How to remove duplicate entries in text file?

To get the result you’re after, you need to extract the first column, and filter that: Or you can do it with awk as pointed out by taliezin, with a slight variant to only output the first column:

When to ignore duplicates in a path element?

PATH elements are traversed from front to back, so when there are duplicates, the second duplicate is effectively ignored. Iterating from back to front would change the order. @EricWang In that case, the added value has no effect so should be ignored. By going backwards, you’re making the added value come before.

How to delete duplicated rows based in column value?

– Stack Overflow How to delete duplicated rows based in a column value? Using a bash shell script based in Linux, I’d like to delete all the rows based on the value of column 1 (The one with the long number).

How to remove duplicate lines from a text file in Linux?

How do I remove all duplicate lines from a text file under GNU/Linux? You need to use shell pipes along with the following two Linux command line utilities to sort and remove duplicate text lines: sort command – Sort lines of text files in Linux and Unix-like systems. uniq command – Rport or omit repeated lines on Linux or Unix.

What to do if you find duplicates in a CSV file?

If duplicates are found in a file then, I want to delete all rows with that value in column and keep only one row with highest value in the fourth column. The file is in CSV format and is already sorted.

Are there any free programs to remove duplicate files?

Duplicate Cleaner Free. Duplicate Cleaner by DigitalVolcano Software is the leading program for finding and removing duplicate files on your Windows PC. Documents, pictures, music and more – this app will find it all. This free version has a subset of features found in it’s big brother, Duplicate Cleaner Pro.

How to join two text files, removing duplicates?

If you can affort to use a case insensitive comparison, and if you know that none of the lines are longer than 511 bytes (127 for XP), then you can use the following: For an explanation of the restrictions, see What are the undocumented features and limitations of the Windows FINDSTR command?.