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Trying to embed newline in a variable in bash [duplicate]
...ady inserted.
$ var="a
> b
> c"
$ echo "$var"
a
b
c
Or, inside an script code:
var="a
b
c"
Yes, that means writing Enter where needed in the code.
1.2. Create using shell quoting.
The sequence $' is an special shell expansion in bash and zsh.
var=$'a\nb\nc'
The line is parsed by t...
Adding n hours to a date in Java?
... edited Mar 29 '18 at 8:27
Script47
12.4k44 gold badges3636 silver badges5858 bronze badges
answered Aug 27 '10 at 4:40
...
How to check if a file is a valid image file?
...
Update
I also implemented the following solution in my Python script here on GitHub.
I also verified that damaged files (jpg) frequently are not 'broken' images i.e, a damaged picture file sometimes remains a legit picture file, the original image is lost or altered but you are still a...
How do I get the 'clear' command in Cygwin?
...
It's nice to have the clear.exe program for bash script files, so:
Windows Cygwin detail for clear.exe program command.
Download Cygwin setupx86.exe or whatever it's call at http://cygwin.com/
Run it and download from internet. *If you have a proxy connection, you may n...
Using group by on multiple columns
...ues in a given column
COUNT(*) returns the number of rows in a table
SQL script examples about using aggregate functions:
Let's say we need to find the sale orders whose total sale is greater than $950. We combine the HAVING clause and the GROUP BY clause to accomplish this:
SELECT
orderId, S...
The object 'DF__*' is dependent on column '*' - Changing int to double
...
As constraint has unpredictable name, you can write special script(DropConstraint) to remove it without knowing it's name (was tested at EF 6.1.3):
public override void Up()
{
DropConstraint();
AlterColumn("dbo.MyTable", "Rating", c => c.Double(nullable: false));
}
pr...
SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
...rt_file"
The whole code: https://github.com/wayneeseguin/rvm/blob/master/scripts/functions/osx-ssl-certs
For non OSX users
Make sure to update package ca-certificates. (on old systems it might not be available - do not use an old system which does not receive security updates any more)
Window...
Eclipse JPA Project Change Event Handler (waiting)
...and... well, let's just say that after you've written enough windows batch scripts, you'll probably start to question if the language was in fact designed by an experimental Microsoft team composed entirely of illiterate drunken chimpanzees with severe ADHD. Or you may just wonder why OOTB Unix supp...
Echo newline in Bash prints literal \n
... beating their head against the wall trying to figure out why a coworker's script won't print newlines, look out for this ->
#!/bin/bash
function GET_RECORDS()
{
echo -e "starting\n the process";
}
echo $(GET_RECORDS);
As in the above, the actual running of the method may itself be wrapped...
Using str_replace so that it only acts on the first match?
... @oLinkWebDevelopment I'd be interested in seeing your benchmark script. I think it could prove to be useful.
– Dave Morton
Apr 7 '17 at 16:28
...