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chenhao-air:lua chenhao$ cat hello.lua
#!/usr/local/bin/lua
print("Hello, World")
chenhao-air:lua chenhao$ chmod +x hello.lua
chenhao-air:test chenhao$ ./hello.lua
Hello, World
语法
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Setting git parent pointer to a different parent
...$(git rev-parse --verify "${2}^0") || return 2
new_commit=$(
git cat-file commit "$1" |
sed -e '1,/^$/s/^parent '"$old_parent"'$/parent '"$new_parent"'/' |
git hash-object -t commit -w --stdin
) || return 3
git replace "$1" "$new_commit"
}
replace_first_parent B A
# ...
Remove large .pack file created by git
...tch PATH-TO-YOUR-FILE-WITH-SENSITIVE-DATA" --prune-empty --tag-name-filter cat -- --all
This will forcefully remove all references to the files from the active history of the repo.
Next step, to perform a GC cycle to force all references to the file to be expired and purged from the pack file. No...
How to create a function in a cshtml template?
...etLoadingState() here is local function.
– Wolfrevok Cats
Apr 26 at 21:44
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Type erasure techniques
... how a fake-vtable can be staticly created for each erased type is very educational. Note that fake-vtables and function-pointer implementations give you known memory-sized structures (compared to pure-virtual types) that can be easily stored locally, and (easily) divorced from the data they are vi...
How can I test https connections with Django as easily as I can non-https connections using 'runserv
I have an application that uses "secure" cookies and want to test it's functionality without needing to set up a complicated SSL enabled development server. Is there any way to do this as simply as I can test non-encrypted requests using ./manage.py runserver ?
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How to extract public key using OpenSSL?
...en
aws ec2 import-key-pair --key-name amazon-aws --public-key-material '$(cat .ssh/amazon-aws.pub)' --region us-west-2
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How can I replace a newline (\n) using sed?
..., too. See Patrick Dark answer above about using 'tr' in a subshell like ` cat file | echo $(tr "\012" " ") ` which does the trick. Nifty.
– Bernie Reiter
Mar 28 '19 at 11:54
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best way to add license section to iOS settings bundle
My iOS application uses a number of third party components licensed under Apache 2.0 and similar licenses, which requires me to include various bits of text, this kind of thing:
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How can I split a shell command over multiple lines when using an IF statement?
...re the newline. With no such whitespace, your example works fine for me:
$ cat test.sh
if ! fab --fabfile=.deploy/fabfile.py \
--forward-agent \
--disable-known-hosts deploy:$target; then
echo failed
else
echo succeeded
fi
$ alias fab=true; . ./test.sh
succeeded
$ alias fab=false; ....