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Tag: linux

Can long flags be followed by a single character? [closed]

Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 4 years ago. Improve this question I’m aware that the general convention is that short flags (or s…

Unix – Replace column value inside while loop

I have comma separated (sometimes tab) text file as below: parameters.txt: with below code I try to loop through the file and do something I wanted to update the last column of the file to N if the above operation is successful, however below approaches are not working for me: sed ‘s/$f5/N/’ &#821…

Could not run Ec2-server on port 80

I could run the server on port 8000 but when i try to use 80 with python manage.py runserver myip:80 I get: You don’t have permission to access that port. If I use sudo python manage.py runserver myip:80 I get: If I write python in the console I get version 3.5.5 and my env is activated. EDIT: Using sud…

Puppet – How to purge a directory

A bit of a Puppet newbie here. I am trying to recursively purge all files and directories under /var/www except keep one file present (/var/www/html/appicon.ico). This is my code: The code does appear to purge all files and directories, except for other files under /var/www/html. Any thoughts what I am doing …

Preserve quotes when using wordexp

I’m trying to use the wordexp function to shell-like expansion on some strings. wordexp removes single and double quotes, I would like to preserve those however. My initial though was to just surround all quotation mark pairs in the input string with another pair of, this time escaped, quotation marks w…

Why is SIGALARM killing the Python program on Linux?

This programs prints Alive four times on stdout and then dies. While I am not handling the SIGALARM signal explicitly inside the program, I just expect the alarm to get ignored. However, on Linux, the script dies after the alarm is triggered. I have not been able to find any documentation for Linux which stat…

Slicing in Golang leads to blank terminal and messed up threads

Hey I am trying to automate a tool to do my recon I am using url to store url with https:// but there’s a tool whois and sublist3r that needs the address without https:// so I sliced the string but when I run the tool it crashes out and blanks out my terminal I can type but can’t see the