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Questions tagged [text-manipulation]

45 questions
125
votes
17 answers

Linux command to repeat a string n times

Is there any built-in Linux command that allows to output a string that is n times an input string??
GetFree
  • 3,230
60
votes
4 answers

Vim: how to paste a block of text at the end of multiple lines?

Say I have a block of text like this: // Comment1 // Comment2 // Comment3 And I want to append each of these lines to the end of 3 corresponding lines of code: foo = 1; bar = 2; baz = 3; So that the end result is foo = 1; // Comment1 bar = 2;…
Tim
  • 711
36
votes
7 answers

How to replace multiple spaces by one tab

I have some text files which contain some columns separated by a various number of spaces, but instead I need one single tab as a separator. Is it possible to do in Bash?
user_unknown
  • 475
32
votes
12 answers

Efficiently remove the last two lines of an extremely large text file

I have a very large file (~400 GB), and I need to remove the last 2 lines from it. I tried to use sed, but it ran for hours before I gave up. Is there a quick way of doing this, or am I stuck with sed?
Russ Bradberry
  • 879
17
votes
7 answers

How can I reverse a line in Notepad++?

Is it possible to reverse a single line in Notepad++? Example: Hello world Would change to dlrow olleH Should I install a plugin for such functionality? UPDATE: I'd like to keep the clipboard in its original state. So a [copy]-[external…
Ron Klein
  • 381
8
votes
3 answers

FINDSTR: Line is too long

Windows FINDSTR command is useful for sifting through large amounts of data; it filters out lines of text that match or don't match a specified pattern or string (like GNU/BSD grep). But it refuses to output lines longer than a certain length. Is…
voices
  • 2,881
6
votes
5 answers

How Does One Remove Duplicate Text Lines From Files Larger Than 4GB?

I am looking for an open source (possibly 64 bit) windows text editor that will allow me to remove duplicate lines from an extremely large (4GB+) text file. What do you use to remove duplicate lines from your large text files?
darkAsPitch
  • 1,076
6
votes
3 answers

Remove non-duplicate lines in Linux

how can I remove non-duplicate lines from text file using any linux program linke sed, awk or any other? Example: abc bbc abc bbc ccc bbc Result: abc bbc abc bbc bbc Second list have removed ccc because it didn't have duplicate lines. Is it also…
qlwik
  • 63
5
votes
5 answers

How to chain awk print statements?

Okay, here's a quick example; me isolating a host's IPV4 in three steps: ip -br a lo UNKNOWN 127.0.0.1/8 ::1/128 eth0 DOWN wlan0 UP 192.168.0.101/24 fe80::9fcd:45fb:1e0f:a1cc/64…
voices
  • 2,881
5
votes
3 answers

Reverse text in Notepad++

This question was asked several years ago without an accepted answer. The question has also long been inactive. Seems a simple piece of functionality, so perhaps a recent plugin provides the feature. Say I have the text Hello World!. I'd like to…
AlainD
  • 5,158
3
votes
2 answers

Is there any way to reverse text and *character* direction in a pure text document?

I have some text in Latin script (English transcription of Farsi) that I would like to display right-to-left in ordinary text documents (and on my iPod) – is that possible? How? Here’s an example of some text I’d like to reverse (the second row): تو…
Elias Mossholm
  • 43
3
votes
3 answers

How can I merge the contents of 2 text files, in Unix?

I need to combine contents of 2 text files, word by word. The script takes every word from file 1 and combines with file 2. it adds all the combined words in file 3. Example: File1 File2 WordA1 WordB1 WordA2 …
sam
  • 31
2
votes
2 answers

how to insert text at the beginning of each paragraph in bash

I have a file with multiple paragraphs separated by blank line. Technically they are not paragraphs just sections of text separated by blank line. I want to number the paragraphs so to speak by inserting a number in the first line of each line…
OB7
  • 203
2
votes
1 answer

Character String Conversion using Python

Hi I have a website that is in Traditional Chinese and when I check the site statistics it tell me that the search term for the website is å%8f°å%8d%97 親å­%90é¤%90廳 which obviously makes no sense to me. My question is what is this encoding…
boobami
  • 21
2
votes
5 answers

Easiest way to remove unwanted lines from a huge text file

I have a large text file with a size of more than 30 megabytes. I want to remove all the lines which don't match some specific criteria, e.g. lines that don't have the string 'START'. What's the easiest way to do this?
Shawn
  • 437
1
2 3