RichardBronosky/How do I find the package that provides a file.md

## apt-whatprovides
#!/bin/sh
#apt-whatprovides ver. 201801010101 Copyright alexx, MIT Licence
#rdfa:deps="[realpath,apt-file,grep,which,sh,echo]"

BINARY="$(realpath $(which $@) 2>/dev/null)"
[ -z "$BINARY" ] && BINARY="$@"
echo Searching for $BINARY
PACKAGE="$(apt-file search $BINARY|grep -E ":.*[^-.a-zA-Z0-9]${BINARY}$")"
echo "${PACKAGE}"

## How do I find the package that provides a file.md

      
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              How do I find the package that provides a file.md
            
          
    I was trying to track down what installed which on my system. After a little work I created /usr/local/bin/apt-whatprovides
#!/bin/sh
#apt-whatprovides ver. 201801010101 Copyright alexx, MIT Licence
#rdfa:deps="[realpath,apt-file,grep,which,sh,echo]"

BINARY="$(realpath $(which $@) 2>/dev/null)"
[ -z "$BINARY" ] && BINARY="$@"
echo Searching for $BINARY
PACKAGE="$(apt-file search $BINARY|grep -E ":.*[^-.a-zA-Z0-9]${BINARY}$")"
echo "${PACKAGE}"

Though for most THINGs that are installed you can just use:
apt-file search $(realpath $(which THING)) | grep 'THING$'

For THINGs that are not installed, you can use:
apt-file search THING | grep '/THING$'

The apt-whatprovides script works for files that are and are not on your system. For example, my system lacked dig but had ping so this it what resulted:
pi@raspberrypi:~ $ apt-whatprovides ping
Searching for /bin/ping
inetutils-ping: /bin/ping
iputils-ping: /bin/ping

pi@raspberrypi:~ $ apt-whatprovides dig
Searching for dig
dnsutils: /usr/bin/dig
epic4: /usr/share/epic4/script/dig
epic4-help: /usr/share/epic4/help/8_Scripts/dig
knot-dnsutils: /usr/bin/dig

Notice that Searching for is a complete path for ping (installed) and just the binary name for dig not installed. This helped me discover that I needed to install dnsutils without needing to go search https://packages.ubuntu.com/#search_contents
	#!/bin/sh
	#apt-whatprovides ver. 201801010101 Copyright alexx, MIT Licence
	#rdfa:deps="[realpath,apt-file,grep,which,sh,echo]"

	BINARY="$(realpath $(which $@) 2>/dev/null)"
	[ -z "$BINARY" ] && BINARY="$@"
	echo Searching for $BINARY
	PACKAGE="$(apt-file search $BINARY\|grep -E ":.*[^-.a-zA-Z0-9]${BINARY}$")"
	echo "${PACKAGE}"