How do I copy the last 1000 lines in Linux?

How do you copy the last line in Linux?

And so I would be able to copy the last command (after pressing up arrow ) by pressing super+c .

How do you copy the first 100 lines in Unix?

head command example to print first 10/20 lines

  1. head -10 bar.txt.
  2. head -20 bar.txt.
  3. sed -n 1,10p /etc/group.
  4. sed -n 1,20p /etc/group.
  5. awk ‘FNR <= 10’ /etc/passwd.
  6. awk ‘FNR <= 20’ /etc/passwd.
  7. perl -ne’1..10 and print’ /etc/passwd.
  8. perl -ne’1..20 and print’ /etc/passwd.


How do I print the last 10 lines of a file in Linux?

Linux tail command syntax

Tail is a command which prints the last few number of lines (10 lines by default) of a certain file, then terminates. Example 1: By default “tail” prints the last 10 lines of a file, then exits. as you can see, this prints the last 10 lines of /var/log/messages.

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How do I copy a line from a file in Linux?

The vi p and P commands “put” the line back into the file just after (p) or just before (P) the line on which the cursor is resting. Directions: Press the ESC key to be sure you are in vi Command mode. Place the cursor on the line you wish to copy.

How do I get last 200 lines in Unix?

head -15 /etc/passwd

To look at the last few lines of a file, use the tail command. tail works the same way as head: type tail and the filename to see the last 10 lines of that file, or type tail -number filename to see the last number lines of the file.

How do you find duplicate lines in Unix?

The uniq command in UNIX is a command line utility for reporting or filtering repeated lines in a file. It can remove duplicates, show a count of occurrences, show only repeated lines, ignore certain characters and compare on specific fields.

How do I list the first 10 files in Linux?

Steps to find Largest Directories in Linux

  1. du command : Estimate file space usage.
  2. sort command : Sort lines of text files or given input data.
  3. head command : Output the first part of files i.e. to display first 10 largest file.
  4. find command : Search file.


How do you grep the first 10 lines?

11 Answers

  1. you can also pipe an arbitrary stream to head : someCmd | head -10 – Stuart Nelson May 30 ’15 at 8:19.
  2. Head defaults to printing the first 10 lines to standard output, so this is valid for 10 lines head log.txt | grep <whatever> – Zlemini Sep 30 ’16 at 12:38.
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How do I copy the first 10 records in Unix?

Shell/Bash answers related to “copy first 10 lines of a file to another file in unix”

  1. add line to beginning of file shell script.
  2. bash add text to the beginning or end of every line.
  3. bash cat file and rewrite it same line.
  4. bash for each line of file.
  5. bash iterate over lines of a file.
  6. bash loop lines in file.


How do I read the first 10 lines of a file in Linux?

To look at the first few lines of a file, type head filename, where filename is the name of the file you want to look at, and then press <Enter>. By default, head shows you the first 10 lines of a file. You can change this by typing head -number filename, where number is the number of lines you want to see.

How do I grep the last line of a file?

A Posix version would read: awk ‘(FNR==1)&&s{print s; s=””}/PATTERN/{s=$0}END{if(s) print s}’ file1 file2 file3 … awk ‘BEGINFILE{s=””}/PATTERN/{s=$0}ENDFILE{if(s) print s}’ file1 file2 file3 … Get last line of each file (prefixed with file name).

Who am I command in Linux?

whoami command is used both in Unix Operating System and as well as in Windows Operating System. It is basically the concatenation of the strings “who”,”am”,”i” as whoami. It displays the username of the current user when this command is invoked. It is similar as running the id command with the options -un.

What is the use of awk in Linux?

Awk is a scripting language used for manipulating data and generating reports. The awk command programming language requires no compiling, and allows the user to use variables, numeric functions, string functions, and logical operators.

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How do I copy a line from a file in Unix?

  1. awk : $>awk ‘{if(NR==LINE_NUMBER) print $0}’ file.txt.
  2. sed : $>sed -n LINE_NUMBERp file.txt.
  3. head : $>head -n LINE_NUMBER file.txt | tail -n + LINE_NUMBER Here LINE_NUMBER is, which line number you want to print. Examples: Print a line from single file. To print 4th line from the file then we will run following commands.


How do I copy and paste a line in vi?

Copy, Cut, and Paste in Visual Mode

  1. Place the cursor on the line you want to begin copping or cutting.
  2. The visual mode has three subtypes. …
  3. Move the cursor to the end of the text you want to copy or cut. …
  4. Press y to copy, or d to cut the selection.
  5. Move the cursor to the location where you want to paste the contents.


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