as you saw in the last post from Chubler and me, that we have different views on what is the preferred choice of coding. I hope this causes not too much confusion for you.
Global And Local Variables
I just checked your code at github and want to mention, that you are using global variables a lot which one should better avoid. Use local variables instead. A global variable is a variable that is accessible and changeable everywhere in the program. There's a danger if a global variable is changed/used where it is unexpected. One may use even the same variable name in different places for different purposes. It most likely will break the program. A local variable is valid only inside of a function in which it is defined.
Example:
Output:
Function Arguments And Return Values
A recommended way is to put what you need as arguments into your function and return back what you want from the function. Returning back in bash means mostly to print it(echo, printf, ...). (yes, return also exists, but I try to make it easy).
A simple example:
The function add takes 2 arguments, adds them and prints them. The output is received from the function and put into the (global) variable sum.
I couldn't find an existing thread that addressed this question, so hopefully this isn't redundant with anything previously posted. Here goes:
I am writing a C-Shell script that runs a program that takes an arbitrary number of parameters:
myprog -a file1 \
-b file2 \
-c file3 ... \
-n... (2 Replies)
I need help in writing a BASH SCRIPT of ls command.
for example:
$ ./do_ls.sh files
f1.txt
f2.jpeg
f3.doc
$ ./do_ls.sh dirs
folder1
folder2
folder3
My attempt:
#!/bin/bash
#
if test $# -d file
then
echo $dirs
else (3 Replies)
Hello,
I would like to modify an existing script of mine that uses a manually defined "MCVERSION" variable and make it define that variable instead based on this JSON file stored online:
https://s3.amazonaws.com/Minecraft.Download/versions/versions.json
Within that JSON, I 'm looking for... (4 Replies)
All,
Have a weird issue where i need to generate a report from GitHub monthly detailing user accounts and the last time they logged in. I'm using a windows box to do this (work issued) and would like to know if anyone has any experience scripting for GitAPI using windows / cygwin / powershell?... (9 Replies)
I am trying to automate editing of a json file using bash script.
The file I initially receive is
{
"appMap": {
"URL1": {
"name": "a"
},
"URL2": {
"name": "b"
},
"URL3": {
"name": "c"
},
}
WHat I would like to do is replace... (5 Replies)
i have a json data that looks like this:
{
"ip": "16.66.35.10",
"hostname": "No Hostname",
"city": "Stepney",
"region": "England",
"country": "GB",
"loc": "51.57,-0.0333",
"org": "AS6871 British Telecommunications PLC",
"postal": "E1"
}
im looking for a way to assign... (9 Replies)
Hello guys,
I want to parse a JSON file in order to get the data in a table form.
My JSON file is like this:
{
"document":{
"page":
},
{
"column":
}
]
},
{
... (6 Replies)
One of the great thing about unix is the ability to pipe multiple programs together to manipulate data. Plain, unstructured text is the most common type of data that is passed between programs, but these days JSON is becoming more popular.
I thought it would be fun to pipe together some command... (1 Reply)
Hi All,
I am new to shell scripting, Need your help in creating a shell script which converts any unix command output to JSON format output.
example:
sample df -h command ouput :
Filesystem size used avail capacity Mounted
/dev/dsk/c1t0d0s0 8.1G 4.0G 4.0G 50% /... (13 Replies)