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Sorting a tab delimited file
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Using bash, this will do the trick:
$ sort -t$'\t' -k3 -nr file.txt
Notice the dollar sign in front of the single-quoted string. You can read about
it in the ANSI-C Quoting sections of the bash man page.
sh...
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
share
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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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Symbolicating iPhone App Crash Reports
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Steps to analyze crash report from apple:
Copy the release .app file which was pushed to the appstore, the .dSYM file that was created at the time of release and the crash report receive from APPLE into a FOLDER.
OPEN terminal application and go to the folder created above (using cd comma...
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...
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
## ...
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...