- The most complete backup of dev sdX with dd, tar, gz, xz
Since xz 5 2 6, this option also makes xz compress or decompress even if the input is a symbolic link to a regular file, has more than one hard link, or has the setuid, setgid, or sticky bit set The setuid, setgid, and sticky bits are not copied to the target file
- Newest xz Questions - Super User
The most complete backup of dev sdX with dd, tar, gz, xz What is the most complete way to backup restore entire dev sdX (to from a file) including device partition table and partition flags, all possible metadata, owners, file permissions, ACLs, creation
- linux - Incremental Backups of ntfsclone Images - Super User
diff -u <(xz -dc old-backup ntfsclone xz) \ <(sudo ntfsclone -s -t -o - dev sda2) \ | xz -zvc > new-backup ntfsclone delta xz Obviously, the above command doesn't work, but I would like to be able to decompress the old image, compare it to an ntfsclone representation of the Windows partition, and create a compressed delta image from the
- Between xz, gzip, and bzip2, which compression algorithim is the most . . .
xz : 32 2s @ 5 43 xz -e : 6m40 @ 7 063 xz : 4m51s @ 7 063; So if you really desperatly need speed, lz4 is awesome and still provides a 2 8 compression ratio If you desperatly need to spare the byte, xz at the maximum compression level (9) does the best job for text files like the kernel source However, it is very long and takes a lot of memory
- backup - Why is piping dd through gzip so much faster than a direct . . .
dd by default uses a very small block size -- 512 bytes (!!) That is, a lot of small reads and writes It seems that dd, used naively in your first example, was generating a great number of network packets with a very small payload, thus reducing throughput
- boot - Getting Rufus to output to a disk image file - Super User
Rufus can create an uncompressed VHD image from whichever drive you have currently selected, which, for all intent and purposes can be used as a regular DD image (because the only difference with a regular DD image is an extra 512-byte footer, which, no matter how much you may think otherwise, will NEVER EVER come in the way of using the vhd as a img)
- compression - How to dump and compress MySQL database in Windows only . . .
then just copy the 100MB backup file to Linux box via smb: EDIT : actually it's >2GB when exported to sql , so I do really need the compression: $ xz --list mysql-all_20141128_2012 sql xz Strms Blocks Compressed Uncompressed Ratio Check Filename 1 1 96 2 MiB 2,297 7 MiB 0 042 CRC64 mysql-all_20141128_2012 sql xz
- 7 zip - Different compression methods in 7zip: Which is best suited for . . .
7-Zip (at least as of 2019-09-27) has a built-in Help document with a very, very nice explanation of the various settings you can choose and what, in general, each is good for
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