cat Questions
2
Solved
I've recently pulled a nginx image:
docker pull nginx
I can run it successfully and go to http://server_name and see the "Welcome to Nginx" page:
docker run -d -p 80:80 nginx
But then when I ...
9
Solved
I have multiple files which I want to concat with cat.
Let's say
File1.txt
foo
File2.txt
bar
File3.txt
qux
I want to concat so that the final file looks like:
foo
bar
qux
Instead of thi...
4
I know how to get a range of lines by using awk and sed.
I also do know how to print out every nth line using awk and sed.
However, I don't know how to combined the two.
For example, I have a fil...
4
Solved
What is the effect of putting "@" before something (like the path of a file containing classpath entries for a Java run command)?
I know it's something to do with file contents but as you can imag...
Hemotherapy asked 23/10, 2012 at 21:59
6
Solved
The man page of cat says:
-v, --show-nonprinting
use ^ and M- notation, except for LFD and TAB
What is the M- notation and where is it documented?
Example:
$cat log -A
wrote 262144 bytes from fi...
Hon asked 22/6, 2017 at 8:38
4
I have a file.txt that has some content. I want to search for a string in file1.txt, if that string is matched I want to replace that string with the content of the file.txt. How can I achiev...
5
Solved
When you do
cat some-symlink-to-some-real-file
it shows the contents of the real file, not what is within the symlink itself. Is there a way to see what's actually in it?
Pd asked 1/1, 2011 at 0:35
7
Solved
Using cat command as follows we can display content of multiple files on screen
cat file1 file2 file3
But in a directory if there are more than 20 files and I want content of all those files to b...
2
Solved
I am doing some benchmarking with PHP file reading functions just for my overall knowledge.
So I tested three different ways to read the whole content of a file that I thought would be very fast.
...
Panties asked 5/7, 2014 at 19:47
6
Solved
I have a text file that contains something like this:
abc 123, comma
the quick brown fox
jumped over the lazy dog
comma, comma
I wrote a script
for i in `cat file`
do
echo $i
done
For some reaso...
14
Solved
Is something like this:
cat "Some text here." > myfile.txt
Possible? Such that the contents of myfile.txt would now be overwritten to:
Some text here.
This doesn't work for me, but also do...
7
Solved
I would like to launch this vagrant command cat(run perfectly!) to provisionning my container with a Dockerfile :
# Configure Virtualenvwrapper.
RUN cat <<EOF >> /home/docker/.bashrc
#...
Oulu asked 1/11, 2016 at 11:36
2
Learning about big query on google app engine and wanted to try out this library that also required me to know about Converting the service account credential to other formats. I have tried the com...
5
Solved
In git, what does cat-file stand for in this command?
$ git cat-file <...>
My first thought is "concatenate file" because the Unix command cat stands for "concatenate", but this doesn't co...
6
Solved
I have several logs containing lines all starting with a timestamp, so that the following works as expected to merge them:
cat myLog1.txt myLog2.txt | sort -n > combined.txt
Problem is, that ...
Sequestration asked 7/4, 2013 at 19:25
21
I would like to concatenate a number of text files into one large file in terminal. I know I can do this using the cat command. However, I would like the filename of each file to precede the "data ...
Stadia asked 6/5, 2011 at 21:55
6
Solved
I am trying to cat three files and obtain and insert a newline \n
after each file ,I thought of using something like :
cat f1 f2 f3|tr "\EOF" "\n"
without success.
What is the easiest way to a...
2
Solved
powershell.exe -ExecutionPolicy Bypass -C "get-process >> $env:APPDATA\test.log; cat $env:APPDATA\test.log"
Hi everyone, can someone translate what cat is in powershell? or if you'...
Gillenwater asked 27/2, 2021 at 23:3
3
How can I add/append data.frame abc to the text file that I have opened previously. I am writing some important information to that file and then I want to append that data.frame below that informa...
6
Solved
I have to fetch one specific line out of a big file (1500000 lines), multiple times in a loop over multiple files, I was asking my self what would be the best option (in terms of performance).
The...
Misanthrope asked 26/3, 2013 at 8:45
4
Solved
In order to see the console messages output by a function running in a foreach() loop I followed the advice of this guy and added a sink() call like so:
library(foreach)
library(doMC)
cores &l...
4
Solved
I know you can escape special characters with "\"'s, but I'm interesting in creating commands that will go to the terminal that include special characters, and these cannot read the backslashes wel...
3
I want to make the following commands:
cat > template.txt
[enter in the terminal]
text
[Ctrl+d in the terminal]
in a script.
Is there a way to tell the script to do enter\Ctrl d?
Is there ...
3
Solved
In a particular directory, I made a file named "fileName" and add contents to it. When I typed cat fileName, it's content are printed on the terminal. Now I used the following command:
cat fileNam...
5
I'm installing XLConnect library in R studio but, unable to do so.
I know that this package has java dependency and my R software and java both are 64 bit.
Also, both have configured correctly.
I h...
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