sort | uniq -d不会删除重复项，它会打印**重复的每一批行中的一行。您可能应该使用sort -u来代替-...
注意：'uniq'不检测重复的行，除非它们相邻。您可能希望先对输入进行排序，或者使用'sort -u'而不使用...
8. Remove Non-adjacent Duplicate Lines in File One of the trivial limitations of theuniqcommand is that it only removes adjacent duplicate entries. However, sometimes we want to remove the duplicate entries regardless of their order in the given file. In such cases, first, we cansort the fil...
Add line number for all non-empty-lines in a file $ sed '/./=' thegeekstuff.txt | sed 'N; s/\n/ /' More sed examples:Advanced Sed Substitution Examples 6. awk command examples Remove duplicate lines using awk $ awk '!($0 in array) { array[$0]; print }' temp Print all lines...
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....
terminals, shells, consoles, and command lines If you're exploring Linux or Unix, you might hear the terms terminal, command line, shell, and console, and you may justifiably be confused about which is which and whether they're the same thing. They're definitely all related, but there are...
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,$5;}' employee.txt More awk examp...
Without using cl-acltool, rules are not installed into hardware. Running cl-acltool -i (the installation command) resets all rules and deletes anything that is not stored in /etc/cumulus/acl/policy.conf. For example, running the following command works: cumulus@switch:~$ sudo iptables -A ...
If your file/stream does not contain new-line characters in the middle of the lines (you could be using a different Record Separator), you can use: awk -v m="\x0a" -v N="3" '{$N=m$N ;print substr($0, index($0,m)+1)}' The first case will fail only in files/streams...
(sort $(notdir $(boards))) board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) board-dirs := $(sort $(notdir $(board-dirs:/=))) help: @echo 'Cleaning targets:' @echo ' clean - Remove most generated files but keep the config and' @echo ' ...