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Questions tagged [cat]

A UNIX utility for concatenating files or input streams together. Do not use for questions about the animal.

0 votes
2 answers
2k views

What's the behaviour of `cat | less`?

I tried to run the following command: cat | less I know both commands require something from the standard input. When I run it that's what I expected: all my inputs goes to cat and I will not be ...
user1833218's user avatar
2 votes
3 answers
4k views

add new line after every end of file's contents while merging multiple files

I have written shell script to merge different file's contents I have created directories f1,f2,d1,d2 and files under them , I need to merge all files's contents : comand is (find /home/ah5024331/f1 ...
user's user avatar
  • 209
1 vote
1 answer
179 views

Empty line appears while merging different file contents in shell script

I have written shell script to merge different file's contents I have created directories f1,f2,d1,d2 and files under them , I need to merge all files's contents : comand is find /home/ah5024331/f1 /...
user's user avatar
  • 209
0 votes
1 answer
643 views

Piping a line of the file read with while read loop

I am trying to read each line of the file and then assign some parts of it to variables. A line itself is read as a variable so I need to process a variable input say for cat which seems to be ...
Jargal's user avatar
  • 1
0 votes
2 answers
1k views

How to merge multiple files into single file in given directories

I want to write a shell script to merge contents of multiple files in a given directories. DIR1 contains sample1.txt sample2.txt sample1.txt contents :---this is sample1 file--- sample2.txt ...
user's user avatar
  • 209
0 votes
0 answers
1k views

cat > $FILE_NAME << EOF - Explanation of the inner workings

I know what this one does, I learned "pattern like" and just works. I also know: that > is a redirect to a file that << is also a redirect to file see below EOF is just a placeholder, when ...
Ely's user avatar
  • 169
33 votes
3 answers
48k views

Using -replace on pipes in powershell

I want to test out a replace before I use it, so I'm trying to write a quick online command to see what the output is. However, I'm not sure what the syntax is. What I want to do is something like ...
David says Reinstate Monica's user avatar
0 votes
0 answers
561 views

How to uninstall screen (monitor / display) drivers?

While testing out some different computer screens (also called displays or monitors) on a Windows 7 SP1 system, I installed the .INF files for each screen. I also installed the .ICM (color matching ...
End Antisemitic Hate's user avatar
3 votes
4 answers
2k views

Prevent cat from opening a binary file

Is there a way to prevent or prompt you when trying to cat binary files? Oftentimes I need to work with log files or data files, some of which are text and others not. It's easy to get mixed up, and ...
bobdole's user avatar
  • 63
1 vote
2 answers
664 views

Is cat output modified by writing to the file

With a piped command sequence like: $ cat afile | somecommand | tee afile afile is both read (by cat) and written (by tee). The question is, supposing afile is at least several megabytes (or large ...
adelphus's user avatar
  • 240
0 votes
2 answers
91 views

Combine the results of a CAT and TAC in a single window in Linux

I have two log files which I would like to view on my screen simultaneously. Below you can see my commands: pi@raspberrypi ~ $ watch -n 1 tac /home/pi/log/log.txt pi@raspberrypi ~ $ watch -n 1 cat /...
user avatar
17 votes
2 answers
6k views

lossless concatenation of ogg vorbis files

I have a couple of ogg vorbis files, all encoded with the exact same properties that I want to concatenate into a single file. I know that the ogg vorbis format supports plain concatenation of ...
josch's user avatar
  • 928
0 votes
0 answers
146 views

Unix cat to Windows user

I uploaded about 6GB of video in 3 separate files created using the cat command on my Mac, thinking the recipient of those files was a Mac user as well. It turns out he's using Windows 8. How can he ...
dave_d's user avatar
  • 1
2 votes
2 answers
4k views

linux cat into file including exiting code all from copy+paste

Can I print out a code to STDOUT that would mimic the behavior of Ctrl+c inside cat? E.g. I would like my script to print out the cat command followed by the content of the file like this: cat > /...
719016's user avatar
  • 4,457
0 votes
2 answers
162 views

how to clone a directory list to another directory

I am trying clone a directory and it's subdirectories into another directory. I have hundreds of music directories with sub-directories that I want to convert from flac to ogg. I want all the music ...
Widgeteye The Terrible's user avatar

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