I am creating a yaml file in GitHub Actions to install softwares on Linux servers created using terraform. Using the pipeline i am able to ssh into the linux servers. In one of the servers i am creating a .ssh directory and an id_rsa file (which contains the private key of the other server) which i intend to use to
Tag: cat
using only ‘grep’ command to get specific column
This below shows this some lines of csv file, i want to get the results that only get the Population column with only using grep command. results i want: The command i made for this problem was which got results below how can i get rid of the rest of things without using awk sed or any other things? Answer
Linux Internal Process for Cat and Grep [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago. Improve this question I’m newbie to linux back round process, for example i have the below linux command, Maybe the question will duplicate here but i couldn’t find
how to view contents of asm diskgroup contained file?
I’ve just transferred my oracle 11g 11.2.0.4 DB to ASM and I want to look at the contents of some of the files. At first I tried using ASMCMD but then realized it doesn’t have such a command, and when trying to read from the diskgroup path it returns “no such file…”. is there any way to accomplish that? thnx
How can I use the cat command to read from a character device with my own character device driver?
I am trying to write a simple read/write character driver for a beaglebone. One of the tasks is to be able to use the cat command to read from the device, but I am unable to do so. Here is the code for my read function for my character device driver located inside char_drvr.c: Read executes successfully (the correct value
Fast way to grep gzipped files in reverse piped to tail/head
I need to search a folder of gzipped files for a string, however I need to search starting at the bottom of each file. I then need the command to return results when it has 10 matches. So far I have this: I’m using zcat to get all the file contents, and then I use tac to reverse them. This
PostgreSQL COPY FROM STDIN not working, but FROM PATH works
In PostgreSQL I previously created a table like so: The idea is to import multiple csv files into this table. My approach is to use COPY … FROM STDIN instead of COPY … FROM ‘/path/to/file’, as I want to be able to cat from the shell multiple csv files and pipe them to the sql script. The sql script to
Why cat 0>file doesn’t work
In Unix, I know that 0 1 and 2 represent stdin stdout and stderr. As my understanding, the command cat meaning “concatenate” can concatenate different files. For example, cat file>&1 can concatenate the file and the stdout and the arrow means the redirection from the fileto the stdout, so we can see the content of the file from the terminal
How to traverse when using `cat` command? [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 6 years ago. Improve this question How to travel in the shell using cat command? (arrow keys are not working) Answer I think you are asking for a pager. For that
Combine 3000k txt files into one txt file Linux
I want to combine 3000k txt files in one txt file Tried this: But this is gives an error How to do this Answer You can use find for that: * expansion has limits because bash expands it into every single filename and arguments are limited by kernel setting MAX_ARGS_PAGES (see http://www.linuxjournal.com/article/6060)