7z get total size of uncompress contents?

Question

How might i get the size of the contents of a zip/rar/7z file after full extraction? Under both windows and linux. I thought about using 7z l filename command but i dont like the idea of the filename interfering with the code counting the size of each file.

Gutter

I don't quite get what you mean by the "filename interfering with the code counting the size of each file", but if you are going for a machine-readable format, you might be interested in the -slt command line option. – Surely

Answer 1

The command line version of 7zip, 7z.exe, can print a list of files and their sizes, both compressed and uncompressed. This is done using the l flag.

Use this command:

7z.exe l path\folder.zip

You can also include wildcard which gives the overall total for all archives in a folder:

7z.exe l path\*.zip

Rodrigorodrigue

Worth saying if you redirect the output of 7z.exe l path\*.zip to a text file then you get a very useful summation at the end of the text so you know what your total input and output file sizes are. – Brainpan

Also worth saying that the 7z command is available via the p7zip apt package on Ubuntu and many similar Linux systems, and also produces the described output. – Naumann

if there are many zip files, one might just need Totals, then 7z l '*ZIP'|tail -n 3 will print like Archives: 1671 Volumes: 1671 Total archives size: 637398326 – Ellora

Answer 2

This doesn't solve your filename problem, but may be good enough for others and myself (in cygwin):

/cygdrive/c/Program\ Files/7-Zip/7z.exe l filename.zip | grep -e "files,.*folders" | awk '{printf $1}'

Hydrothermal

Answer 3

Using Powershell:

'C:\Program Files\7-Zip\7z.exe' l '.\folder-with-zips\*.zip' | select-string -pattern "1 files" | Foreach {$size=[long]"$(($_ -split '\s+',4)[2])";$total+=$size};"$([math]::Round($total/1024/1024/1024,2))" + " GB"

Or if you want to watch it total things in real-time.

'C:\Program Files\7-Zip\7z.exe' l '.\folder-with-zips\*.zip' | select-string -pattern "1 files" | Foreach {$size=[long]"$(($_ -split '\s+',4)[2])";$total+=$size;"$([math]::Round($total/1024/1024/1024,2))" + " GB"}

If you run it multiple times, don't forget to reset your "total" variable in between runs, otherwise it'll just keep adding up

Remove-variable total

Transmutation

For Powershell I had to tweak your script a bit: & 'C:\Program Files\7-Zip\7z.exe' l '.\*.7z' | select-string -pattern ".* files" | Foreach {$size=[long]"$(($_ -split '\s+',4)[2])";$total+=$size};"$([math]::Round($total/1024/1024/1024,2))" + " GB" as archive might have more than 1 file in it – Marquess