Tag: shell

How to split a multi-gigabyte file into chunks of about 1.5 gigabytes using Linux split?

I have a file that can be bigger than 4GB. I am using the linux split command to split it by lines (that’s the requirement). But after splitting the original file, I want the size of split file to be always less than 2GB. The original file size can vary from 3-5 GB. I want to write some logic for

find and replace a String in vi editor on linux?

linux replace shell unix vi

i am trying to replace String with new String in Linux vi editor but getting following error. Answer I’d guess the reason you’re getting that error message is because you intend to replace the string on all lines, not just the current one. In order to search all lines, add a % to your command:

Function Shell Script no return data

bash linux shell

When i run the script (./meuscript.sh), I have no return, only if i select cancel the dialog. If I run the script without the function, the command is executed correctly Answer You have an endless loop. Rename the function to something else so that you don’t end up with ping calling ping calling ping calling ping… Additionally, you probably want

I am trying to replace a string in a file via shell script where a part of the string is unknown

linux replace sed shell string

I have tried a few ways with sed as below without success: I do not know the value behind “=” which can have up to 2 digits. Before and after the string there is a space, and the string always starts with “device.value=” PS: The file is a one liner with many values seperated through a space. I would appreciate

How to list recently deleted files from a directory?

bash command-line linux shell

I’m not even sure if this is easily possible, but I would like to list the files that were recently deleted from a directory, recursively if possible. I’m looking for a solution that does not require the creation of a temporary file containing a snapshot of the original directory structure against which to compare, because write access might not always

Parsing a config file inside shell script

awk bash config linux shell

I am trying to parse an ini file inside a shell script. name.conf file: I could parse the values by the command I wanted to know if there was some way by which I could group the contents of my config and parse it name.conf file: I just need the values in a shell array say names and print them

How to compute Cumulative values in Shell?

awk linux shell unix

I would like to compute cumulative values from the below data file and writing them into columns after inserting a serial number. Where ifile.txt has 3 rows and 9 columns in this example. Desire output: Here first column is used for the serial number. So what I did is: I first converted into columns using Then I use awk I

how to create putty shortcut to jump directly to chain ssh? [closed]

bash centos linux shell ssh

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Bash script wait depended commands processes

bash docker linux shell

I am fairly new in bash scripting. I need to use bash script for manage my microservices, so these services need build and deploy(on docker). So I have commands like that : So as you see(a little part of script, i am grouping depended commands in functions),commands need to wait previous depended commands like that. But wait $! command doesn’t

Read line output in a shell script

bash linux sh shell

I want to run a program (when executed it produces logdata) out of a shell script and write the output into a text file. I failed to do so :/ $prog is the executed prog -> socat /dev/ttyUSB0,b9600 STDOUT $log/$FILE is just path to a .txt file I had a Perl script to do this: I tried to do this