In this tutorial, we’ll explore a method to remove duplicate lines from an input file without sorting. 2. Introduction to the Problem Before we come to the solution to the problem, let’s discuss the scenarios in which we cannot or shouldn’t sort a file before removing duplicates. ...
Write a script that read a file name from the user, and remove duplicate lines from that file? read -p "Enter the file name:" filename sort -u $filename > temp.txt mv temp.txt $filename Operators Arithmetc operators: + - * / % Relational operators (numeric comparison operators), ...
The primary purpose of theuniqcommand is to identify and remove duplicate lines from a file. However,theuniqcommand only works with consecutive duplicate lines. Therefore, we should combine it with thesortcommand for effective use. For example, we can use the-doption to display only the duplica...
The uniq command filters duplicate adjacent lines from input. This is often used in conjunction with sort.Basic syntax:uniq [options] [input]Options:-c –Prefix unique lines with count of occurrences. -d –Only show duplicated lines, not unique ones....
master Documentation LICENSES arch block certs crypto drivers fs include init io_uring ipc kernel lib mm net rust samples scripts security sound tools usr virt .clang-format .clippy.toml .cocciconfig .editorconfig .get_maintainer.ignore .gitattributes ...
Remove duplicate lines using awk $ awk '!($0 in array) { array[$0]; print }' temp Print all lines from /etc/passwd that has the same uid and gid $awk -F ':' '$3==$4' passwd.txt Print only specific field from a file. ...
Remove duplicate lines using awk $ awk '!($0 in array) { array[$0]; print }' temp Print all lines from /etc/passwd that has the same uid and gid $awk -F ':' '$3==$4' passwd.txt Print only specific field from a file. $ awk '{print $2,$5;}' employee.txt More awk examp...
# read saved command lines for existing targets existing-targets := $(wildcard $(sort $(targets))) -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) endif # config-build endif # mixed-build endif # need-sub-make PHONY += FORCE ...
Remove duplicate function declaration in Row.h 4个月前 RowField.h Introduce Row and Table classes for screens beyond top-processes 1年前 Scheduling.c Linux: update gathering information regarding threads 2年前 Scheduling.h Relocate include of config.h from header to source modeule ...
headif not specified, print out the first 10 lines of a file head -n 100display the first 100 lines tail -nif not specify n , print out the last 10 lines of a file tail -n +[Num]output the starting with [Num] cut -f + columns no. -d , file name: select columns ...