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Bash continuation lines
... two arguments to echo and you only want one, then let's look at string concatenation. In bash, placing two strings next to each other concatenate:
$ echo "continuation""lines"
continuationlines
So a continuation line without an indent is one way to break up a string:
$ echo "continuation"\
>...
git: diff between file in local repo and origin
...ike this (you are in the local folder):
#!/bin/bash
git fetch
var_local=`cat .git/refs/heads/master`
var_remote=`git log origin/master -1 | head -n1 | cut -d" " -f2`
if [ "$var_remote" = "$var_local" ]; then
echo "Strings are equal." #1
else
echo "Strings are not equal." #0 if you want
fi...
Use cases for NoSQL [closed]
... and CouchDB as they seem to be getting the most coverage with regard to PHP development and that is my focus.
9 Answers
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程序员才能听得懂的笑话 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...这个论坛的人都吵起来,我今晚就跟你走. 某软件工程师:PHP是最好的语言! 某论坛炸锅了,各种吵架... 某女:服了你了,我们走吧 你想干啥都行. 某软件工程师:今天不行,我一定要说服他们,PHP必须是最好的语言 某女：....
50、《c++程...
Can an html element have multiple ids?
... through space separated or any character separation. Though in the specification it says that for backward compatibility it must not contain space character in attributes values Fragment Identifiers(w3.org/TR/xhtml1/#guidelines) So if you want to express multivalued IDs you have to express it diffe...
What is the most elegant way to remove a path from the $PATH variable in Bash?
...
My dirty hack:
echo ${PATH} > t1
vi t1
export PATH=$(cat t1)
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How do I determine k when using k-means clustering?
...t Bischof, Ales Leonardis, and Alexander Selb in Pattern Analysis and Applications vol. 2, p. 59-72, 1999.
Finally, you can start with one cluster, then keep splitting clusters until the points assigned to each cluster have a Gaussian distribution. In "Learning the k in k-means" (NIPS 2003), Greg ...
Best way to use multiple SSH private keys on one client
...uct ssh to try multiple keys in succession when connecting. Here's how:
$ cat ~/.ssh/config
IdentityFile ~/.ssh/id_rsa
IdentityFile ~/.ssh/id_rsa_old
IdentityFile ~/.ssh/id_ed25519
# ... and so on
$ ssh server.example.com -v
....
debug1: Next authentication method: publickey
debug1: Trying private...
What is the purpose and uniqueness SHTML?
....shtml" -->
It's been largely superseded by other mechanisms, such as PHP includes, but some hosting packages still support it and nothing else.
You can read more in this Wikipedia article.
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Creating and Update Laravel Eloquent
...thub.com/laravel/framework/blob/4.2/src/Illuminate/Database/Eloquent/Model.php#L553
on :570 and :553
/**
* Create or update a record matching the attributes, and fill it with values.
*
* @param array $attributes
* @param array $values
* @return static
*/
p...