The term 'shell' refers to a general class of text-based command interpreters most often associated with the Unix & Linux operating systems.

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6
votes
1answer
40 views

Monitor Downloads folder and sort files as they are downloaded

I have written my first shell script that uses inotify-tools to monitor my Downloads directory. What I intend to do with the script is that, as soon as a file is ...
4
votes
2answers
45 views

Team git commit cleaner

I cleaned a big repository for my team with this Python code. My goal was for every developer in my team to check if some bad email are in the commit, and replace the information by the good one. I ...
2
votes
0answers
25 views

Replace while loop with sed

I have a script for school that mimics the cp command. Part of the assignment is to modify the script so that the while loop (that assigns stdin to the variable filelist) is instead done with sed. ...
0
votes
1answer
39 views

Is this iptables firewall bash script good? [closed]

I'm learning to use iptables to implement it in my company software. The goal is either to prevent the major attacks and to have good speed transferring files (ssh and ftp). Can you help me to improve ...
1
vote
1answer
63 views

Simple Bash backup script - follow-up

As a follow up to a previous question, linked here, I have revised the code and developed what I believe to be a better solution. In summary, the script should backup all files in a particular ...
3
votes
1answer
121 views

Simple Bash log backup script

I have developed the following script to zip and then remove all files with "*.log" extension in the file name that were modified yesterday. It's definitely not 100% at the moment. For example, it ...
1
vote
0answers
20 views

Basic Unix shell that displays prompt and has two simple commands [closed]

I'm writing a really basic shell for Unix in C. It displays a prompt, [almond], and it has two commands: Set Prompt and exit. I'm reading user input and passing it to a char array, then parsing it ...
3
votes
1answer
37 views

Can this bash shell script that checks for rvm ruby versions be improved?

As it is going to be used as part of some automation and not just at the command line I was wondering if it could be improved at all. Improve would mean any of: handle sad cases better handle ...
8
votes
1answer
403 views

Securely delete a file

I am trying to write a script to securely delete a file. What I am intending to do is to pad the file with /dev/zero once, and then with /dev/urandom three times and then delete the file. For now the ...
3
votes
1answer
50 views

Bash archiving script

I inherited a script at work the other day. I know very little about the command line in general but I'm not entirely new to programming. I am using this as an opportunity to learn... Very little ...
7
votes
3answers
254 views

Simple shell in C [closed]

I am just getting started with C and made this simple shell to test my understanding of some basic principles. The shell reads commands from standard input, forks itself and executes the command. How ...
3
votes
2answers
115 views

Group and send all files to filetype folder

I have around ~2M of files in one folder, which I need to manage. So, I want to separate them in groups by their filetypes. Example: filenames ...
5
votes
2answers
70 views

Function autoloading in bash

I'm wondering if anyone can code review my code below. That's the core code of my little framework for bash in GitHub. ...
4
votes
1answer
117 views

Shell script for creating CR questions

Inspired by Tool for creating Code Review questions. This script generates a markdown document suitable for a CR question from a list of files. For each file it finds, it sends the following to ...
2
votes
2answers
82 views

Comparing if-else and case condition

I have a script used for installing few rpms depending on operating system type. Here in this example, the script will install packages on two system "centos" and "suse". The system names are listed ...
10
votes
1answer
227 views

Bash Music Player 2

This post is a follow-up to this. I wanted further reviews since the code I provided became too old when I got replies, which is why I'm providing it again here. I'm hoping I could get reviews for ...
6
votes
1answer
51 views

Directory of Snapshots

I have snapshots (photos) that I load off my camera's memory card, and store in a folder. Sometimes I have videos, and occasionally plain audio too (the camera can record just sound). Additionally, ...
4
votes
1answer
174 views

Bash Music Player

I have finally finished creating my first real project. It's just a simple music player that can provides the user with the latest music from any site (as long as it contains MP3 files) he provides ...
7
votes
1answer
110 views

Script for handling PPA's on Ubuntu

I'm writing a bash script to handle the PPA's on Ubuntu & derivatives. I was wondering how to know if I'm handling this the right way. So, the script works (flawlessly), but I posted it to a ...
8
votes
3answers
209 views

Iptables Lockdown

I have nginx serving files with uwsgi and I wanted to lock my server down just to allow SSH and Nginx to run. This is what I have: ...
9
votes
3answers
515 views

Bash script that updates Intel e1000e driver

I am now writing a small bash script that updates an Intel NIC driver to the latest version from the official website. Is there any way to improve\simplify the script? I want to avoid a lot of ...
5
votes
2answers
326 views

Text snippet creator/manager in Bash

Below is a script to create and manage text snippets. It is also posted on GitHub. Most of the code is error checking and displaying help because I wanted to make a solid command line interface. The ...
5
votes
2answers
3k views

Running a shell command and getting output

This is the code I'm currently using to run a shell command on the current machine, intended for use only with GNU/Linux at the moment: ...
1
vote
1answer
315 views

Interactive menu system in Bash [closed]

This is a simple loop menu script that I have for class. The goal was to make a menu with applicable commands. Menu: A. Greet me. (Greet the user by their username (using the whoami ...
3
votes
2answers
108 views

Mixing function parameters, commands and command arguments in Bash functions

I'm trying to write a bash function that will take a command such as xcode-select -v or brew -v that outputs a lot of extra ...
3
votes
2answers
115 views

Parallelizing upload

I needed smth that could send (scp/rsync) many files in parallel but that would not overload machine, firewalls on the way by starting e.g. 600 simultaneous uploads, so upload should be done in ...
4
votes
4answers
90 views

apt alternative for proxy environment with bash shell

As I am new to bash scripting, and want to use apt-get in my university. I know that many people have issues when trying to do so. My focus is simplicity and ease of use, but still need to be ...
1
vote
2answers
105 views

Remove NULL / empty fields using awk

just wanted to check with you could this be done better: ...
2
votes
1answer
374 views

Bash to find all placeholder variables in a file and replace will real variables

I am looking to make a generic config file using variables such as: $PLACEHOLDER_USER Then after moving the file into the correct position I want to replace every instance of *$PLACEHOLDER_VARIABLE* ...
3
votes
1answer
429 views

Make a git repository read-only over ssh depending on the key used

I want a git repository, accessible over ssh, to be read-only when used with certain keys. With other keys access to the full system is okay. Here is my solution. git-readonlyshell: ...
3
votes
1answer
1k views

Send an email if a URL is down twice only

We want to check if a URL is down or not. But sometimes, the environment is down for maintenance for 3-4 hours and we don't want to keep sending emails during that time. I have written a shell script ...
5
votes
1answer
137 views

Project Bashory - Bash History

In effort to be more effective and productive with terminals I have started building a bash script. It is for handling the bash history of concurrently running terminals, archiving old commands, and ...
1
vote
0answers
46 views

zsh system status script

The following script is being used to generate the status line in wmii. I'm curious if there are faster/more efficient ways to find the various info I'm grabbing. I'm also a relative newbie when it ...
1
vote
1answer
66 views

Checking if a git repository needs to be updated

I made a small Vim distribution that uses vundle. I decided to make a small function that checks if the repository must be updated. ...
1
vote
1answer
128 views

Automating the install of postgresql from Shell

When my debian server deploys it can run a shell script so I wanted to make one to install postgreSQL, create a role, create two databases and then import a schema into one. Can anyone please look ...
3
votes
0answers
47 views

A z-shell function to quickly cd into projects

I think we all now that problem. We work with multiple projects: private projects, company projects, probably even projects for multiple companies. From day-one, I've always searched for better ways ...
3
votes
1answer
53 views

Input Columns with Awk

I wrote a small script to manipulate fields of a file based on the input of a user. Is there something I could've done better, or perhaps a better refactor? I do know however that I need a way to ...
1
vote
3answers
82 views

How to improve the computation speed of my shell script/program?

I have written a shell script to process my huge data files (each one having around 7,000,000 lines ~ a weeks data in a single file). Below is the sample of my data file (i.e., input file) structure: ...
2
votes
1answer
262 views

List contents of a folder using a shell script and mail the folder

I want to list the contents of a folder and mail the list using a shell script. I Came up with the following script, please let me know if it is okay: ...
2
votes
1answer
102 views

Bash script to manage multiple Java Development Kits installations

I'm writing a bash script to manage multiple JDKs, the script is very simple, you have to choose a directory when you store all the jdk's, and the script maintain ...
4
votes
1answer
1k views

Bash Shell Script uses Sed to create and insert multiple lines after a particular line in an existing file

This code seems to work, but I'd like someone with shell-fu to review it. Is the temp file a good idea? How would I do without? Is sed the right tool? Any other general advice for improving my ...
3
votes
1answer
374 views

Improve a script to generally check status of several git repos

I've tried to write a bash script that gives me a general overview of the status of git repos I have cloned/created. It's not meant to replace git status by any ...
5
votes
2answers
84 views

Make a directory and change to it

A basic shell function to create a directory and change to it goes like this: mkcd () { mkdir "$1" && cd "$1"; } This works well in many cases but breaks ...
7
votes
3answers
188 views

Can I speed up this simple versioning/backup script?

I'm writing a simple automatic backup/versioning bash script. It should basically mirror a directory structure somewhere, and then copy files over there when they've been altered. The ghost files ...
6
votes
2answers
1k views

Shell script to help with branch management for tasks in git

I found nvie's git branching model simple enough to grasp and suitable for my projects - but the frontend supplied at GitHub was far too complex for me to understand. Hence, I wrote this script to ...
2
votes
1answer
253 views

Run all scripts in a sub-directory

When git runs my post-receive hook, I'd like it to run all the scripts in the subdirectory ...
4
votes
1answer
199 views

Review logic in shell script

I have a shell script to mount different remote systems. While it does work, the area I struggle with (not being a programmer) is the logic of the script: it feels quite stilted and there seems to be ...
4
votes
1answer
3k views

Shell script that verifies checksums when moving between filesystems

I coded this because it seemed like a fun project, would be awesome if someone reviewed this. Thanks! ...
1
vote
1answer
192 views

Converting Bash commands into Windows cmd commands

I have the following code that converts a couple of bash commands into Windows cmd commands, as well as adding some commands. This is only my second day programming ...
1
vote
0answers
190 views

Plan9 rio script to tile windows. How can I improve this (rc-shell)

Here is my window tiling script for rio window manager in plan9. It fetches the current screen size, and calculates the locations based on the layout given. How can I improve this program? am I ...