Questions tagged [sh]
sh, aka Bourne Shell, is the Unix Shell, the standard shell since v7 Unix. POSIX has standardized the shell, and portable shell scripts should conform to /bin/sh syntax.
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POSIX shell compatible and POSIX conforming dirname implementation
The discussion in the comments of this answer made me wonder how hard it would be to write a built-in only version of dirname.
This is what I ended up with but I'm ...
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Fizz having an argument with Buzz
For my current project I need to validate responses. The requests will be send from multiple different shell scripts and should be controlled from another script. I'd never targeted a ...
Mast♦
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Count line of code for a JavaScript project
Here is my bash script that I just wrote to count line of code for JavaScript project.
It will list number of:
Comment lines
Blank lines
All lines
Here is my script:
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Shell script to download and extract a tarball from GitHub
I don't want anything to execute if any preceding step fails:
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Shell Script Image Replication
I have a shell script which is being used on an embedded human machine interface (HMI). This script is used to copy a few files from a USB stick to a different place on the device, but with multiple ...
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Squire for your recursive SSH adventures
One day I used to SSH to lots of machines to do some administrative tasks. I constantly used l to list directories just like I do on my own machines. Guess what, ...
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Shell script to assist 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 ...
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Updating text in a HTML document with Bash
This is a small script to update my project's README file. Notes on improvements from any aspect are welcome!
Here is the document it updates.
readme.sh (Executed like so: ./readme.sh)
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Check disk space against a threshold
The below script is one I made to check the disk space on mounted partitions under Debian Wheezy. I tried adding a -d switch to force printing out the used data, ...
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2
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Optimize bash script that concatenates output
I am trying to optimize my script that loops through a folder and extracts only the part of a file name before a date and the header of the file and outputs it into a different file using a delimiter. ...
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3
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Arch linux installation script to be reviewed for any leakage of personal / security info
While I have been teaching myself a little about linux, it's boot processes and service configuration I have been using arch linux in virtualbox for my experimentation.
Eventually after much wiling ...
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A replacement for OSX's path_helper
I was having problems setting my path the way I wanted, I turned to Apple's path_helper but found it appends system dirs to the beginning of the path. I found someone had made a start on a replacement ...
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Shell POSIX OpenSSL file decryption script
Tonight, I tried to write a Bash OpenSSL file decryption script. Encryption script will follow in highly similar manner, so I think it's not necessary now.
Let's suppose we have an encrypted large ...
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2
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An installer for shell scripts, written in pure sh
I wrote a tiny shell script that basically installs a script into your system by copying it to someplace like /usr/local/bin, chmodding it, and adding it to your ...
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Shell script to sync dotfiles repository
I'm doing the git dot files thing and created a script -- my first Unix shell script -- to synchronise the repo dot files with those in the user's home. It checks which dot files exist in the repo ...
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Goodgame Empire coin collector with random offsets in (almost-POSIX) Bash
Today, my goal was again to improve my POSIX shell scripting abilities.
In one MMO game called Goodgame Empire, there is possible to code yourself a coin (tax) collector. But that's of less ...
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Interactive Linux upgrade script
One year ago, I asked for a review of Simple Linux upgrade script in Bash.
Conditions are slightly changed, and/or more accurate:
Code readability for the code user, making it simple to adjust the ...
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Replace version numbers in multiple files
In the script below I need to search in multiple files, and find a string, and replace with another.
It's basically version numbers (which need incrementing). Every time I find the old version number, ...
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1
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Generating a domain and IP blacklist with Bash
This is a project to pull domain & IP blacklists from various sources and compile them into one list. There are some whitelists included that are applied when a blacklist is built.
It draws ...
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1
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Lightshot Print Screen key linux handler - Follow-up #1
This question is a direct follow-up #1 of my previous question:
Lightshot Print Screen key linux handler
There were too many errors which I didn't see at the moment and I tried hard to fix them up ...
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1
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trash script to alias rm
This script implements a command line level trashcan system.
Designed to work around rm doing the bits needed to implement a trashcan system at command line level....
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Script to record an inventory of a backup
This is a script designed to make an inventory file which records the
contents of a directory allowing verification that a backup has the
same data. The same script can also
A full github repo is ...
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3
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Shell script to detect router slider status
I have an openwrt router (TP-Link MR3040) and on boot I have it check the slider (AP, WISP, 3G/4G mode). The goal was to have it execute the current "slider status" vs the old one, or do nothing if it'...
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Bash script that checks if font is installed and installs it if necessary
This checks if a font is installed by using fc-list and grep. If the particular font is not installed, it offers to install it ...
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Mount different remote systems
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 ...
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Process monitoring script
I wrote a script which logs memory usage of a process (pid in file), and reacts in case a limit is reached. I run the script nightly. In my case, the process concerned propably has a memory leak and ...
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Shell script for creating CR questions
Inspired by Tool for creating CodeReview 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 stdout:...
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Whose `git` is it anyway?
A Posix function for finding the nearest parent file. For example "what .git/ am I working in?" or "is there an .npmrc affecting npm from this path?&...
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The Blacklist: Blocking Malicious domains using Bash
I've made this script to automate blocking some deviant hosts on my router, and was curious if there's anything much else that can be done to make it quicker and more efficient.
Presently I'm ...
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2
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*nix, *bsd, etc basic `tput` color setup
My goal with the below piece of POSIX shell code was to address the more platforms the better with shell tput colors. With this code, I now start all of my scripts, ...
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Simple import system for a large shell program
I am writing a large shell program comprised of several source files. I was looking for a basic import system that accomplishes three goals.
Avoid sourcing entire files for access to just a few ...
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Shell script to download Project Euler problems and combine to PDF
This is a script I created that downloads Project Euler webpages and combines them to PDF. The script also downloads animated files.
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Find download URL for a package, from almost-JSON with substitutions
I have an almost-JSON document in a file named versions.json. It looks like this:
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Alternative to env that accepts arguments
It is commonly known that env does not allow passing of arguments - at least not reliably. There are various workarounds described here, but they felt to hacky and ...
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POSIX shell function for asking questions
I've written a tiny function for asking questions intended for my POSIX shell scripts, where I often need user input.
The function takes 2+ arguments, where:
Is a string containing the question.
, 3....
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votes
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Generic error handler function for POSIX shell scripts
Intention
I came with the idea of generic, portable, highly reliable, and further customizable function for Shell scripts, written in POSIX, for error handling.
Purpose
The function shall find out, ...
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Shell install.sh for repository (rpi_videoloop)
I've written my first installation script in shell and was wondering on how I can improve the install procedure to make it more clean?
Here's the code:
...
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Bash script to rename subfolder to include name of parent folder
Here's the current structure of my directory.
.
├── Show 1
│ ├── Season 1
│ └── Season 2
├── Show 2
├── Season 1
└── Season 2
I want to rename the ...
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votes
1
answer
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Bulk File Rename
A function that funnels all filenames into a file and opens that file in vim. The user then changes the names, saves, and quits. Finally the function renames the files in the folder with the new names ...
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1
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checksum hash verification functions for bash scripts
just a little script, or a bit of a template of one that I used to submit an assignment.
I believe it all works fine, I just wanted to give it to other people, and get some feedback on it; maybe make ...
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Moving files and leaving links in bash
The objective of this code is to create a command that move files and leaves links in their place. I'm just a beginner in shell scripting and it would be quite useful to hear your opinions on how to ...
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Bash script that checks for package dependencies and installs them if necessary
I'm new to writing bash scripts and was wondering if I could get someone's advice on a part of the script I'm working on.
Intended purpose of code
Check if a package exists using ...
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votes
1
answer
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PDFcomp: A PDF comprimer easy script
I developed this script in dead time to be able to compress the PDFs that they send me to university and also to be able to send scans to the various institutions that require formats that do not ...
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Is device mounted? Both UUID and device names accepted
I am trying to write is_device_mounted script, which in turn will serve a greater purpose in my home Linux system.
It does not even have an error reporting ...
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Lightshot Print Screen key linux handler
I haven't found any Lightshot Print Screen key linux handler publicly available.
So, I decided to write one today. It is a standard POSIX shell script.
I believe there is always space to get better, ...
- 1,740
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votes
1
answer
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Query database and check server details
I have written bash script to query database and check server details.
Please let me know if the script is as per best standards:
...
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1
answer
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Displaying a table of shell aliases
I'm just getting into bash and sh scripting. I mostly just stub out little convenience or exercise scripts for myself, but I recognize I may be flaunting best practices at times.
My question is ...
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A minimal init script
I tried looking up some good example init scripts, but all that I found were excessively complicated. So I wrote my own simple init script targeting CentOS 6. I tried to follow LSB where I understood ...
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