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How to base64 encode image in linux bash / shell
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You need to use cat to get the contents of the file named 'DSC_0251.JPG', rather than the filename itself.
test="$(cat DSC_0251.JPG | base64)"
However, base64 can read from the file itself:
test=$( base64 DSC_0251.JPG )
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An efficient compression algorithm for short text strings [closed]
...l procotol (or use a table to get other common protocols, like https, ftp, file). The "://" can be dropped altogether, as long as you can mark the end of the protocol. Etc. Go read about URL format, and think on how they can be codified to take less space.
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Convert absolute path into relative path given a current directory using Bash
...m GNU coreutils 8.23 is the simplest, I think:
$ realpath --relative-to="$file1" "$file2"
For example:
$ realpath --relative-to=/usr/bin/nmap /tmp/testing
../../../tmp/testing
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improve t...
Get data from fs.readFile
...onous callback. It doesn't execute right away, rather it executes when the file loading has completed. When you call readFile, control is returned immediately and the next line of code is executed. So when you call console.log, your callback has not yet been invoked, and this content has not yet bee...
Compiling/Executing a C# Source File in Command Prompt
How do you compile and execute a .cs file from a command-prompt window?
15 Answers
15
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Finding the PHP File (at run time) where a Class was Defined
...e any reflection/introspection/magic in PHP that will let you find the PHP file where a particular class (or function) was defined?
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How to export all collections in MongoDB?
...cript for that. Just run it with 2 parameters (database name, dir to store files).
#!/bin/bash
if [ ! $1 ]; then
echo " Example of use: $0 database_name [dir_to_store]"
exit 1
fi
db=$1
out_dir=$2
if [ ! $out_dir ]; then
out_dir="./"
else
mkdir -p $out_dir
fi
tmp_fi...
Uncaught ReferenceError: $ is not defined?
... That solved it for me. The path to the script was wrong in one of my HTML files.
– Adam Jensen
Oct 22 '14 at 5:46
@Je...
Prevent row names to be written to file when using write.csv
... that Edouard published on his site
microbenchmark(write.csv(data, "baseR_file.csv", row.names = F),
write_csv(data, "readr_file.csv"),
fwrite(data, "datatable_file.csv"),
times = 10, unit = "s")
## Unit: seconds
## ...
Download data url file
...ag their zip directly into the browser and it'll let them download all the files within. They can also create new zip files by dragging individual files in.
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