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Insert line after first match using sed
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Alternatively, for portability, you can use perl instead:
perl -pi -e '$_ .= qq(CLIENTSCRIPT2="hello"\n) if /CLIENTSCRIPT=/' file
Or you could use ed or ex:
printf '%s\n' /CLIENTSCRIPT=/a 'CLIENTSCRIPT2="hello"' . w q | ex -s file
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How fast is D compared to C++?
... at the assembler listing, it looks like neither dmd nor gdc inlined scalar_product, but g++/gdc did emit MMX instructions, so they might be auto-vectorizing the loop.
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Vim: Creating parent directories on save
...move my previous options and give feedback.
– moebius_eye
Sep 3 '16 at 14:28
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How to pass prepareForSegue: an object
...is the same as this line
if ([[segue identifier] isEqualToString:@"YOUR_SEGUE_NAME_HERE"])
{
// Get reference to the destination view controller
YourViewController *vc = [segue destinationViewController];
// Pass any objects to the view controller here, like...
...
When should I use malloc in C and when don't I?
...
char *some_memory = "Hello World";
is creating a pointer to a string constant. That means the string "Hello World" will be somewhere in the read-only part of the memory and you just have a pointer to it. You can use the string as rea...
How to import existing Git repository into another?
...mmit to move the merged repository to the subdirectory.
git remote add XXX_remote <path-or-url-to-XXX-repo>
git fetch XXX_remote
git merge -s ours --no-commit --allow-unrelated-histories XXX_remote/master
git read-tree --prefix=ZZZ/ -u XXX_remote/master
git commit -m "Imported XXX as a subtre...
How to delete images from a private docker registry?
...st your catalogs by calling this url:
http://YourPrivateRegistyIP:5000/v2/_catalog
Response will be in the following format:
{
"repositories": [
<name>,
...
]
}
Step 2: Listing tags for related catalog
You can list tags of your catalog by calling this url:
http://YourPrivat...
How to navigate through textfields (Next / Done Buttons)
...ssumptions can be ignored as well.
Swift 4.0
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
let nextTag = textField.tag + 1
// Try to find next responder
let nextResponder = textField.superview?.viewWithTag(nextTag) as UIResponder!
if nextResponder != nil {
...
How do RVM and rbenv actually work?
...runs the corresponding command for that version. Here's how:
If the RBENV_VERSION environment variable is set, its value determines the version of Ruby to use.
If the current working directory has an .rbenv-version file, its contents are used to set the RBENV_VERSION environment variable.
If there...
When should I choose Vector in Scala?
...e, Vector can provide most common operations reasonably fast, i.e. in O(log_32(n)). That works for prepend, append, update, random access, decomposition in head/tail. Iteration in sequential order is linear.
List on the other hand just provides linear iteration and constant time prepend, decompositi...