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cpio, dd, and dump
Extract info
| Question | Answer |
|---|---|
| Create a cpio archive (copy out mode) | cpio -o |
| Extract files from a cpio archive (copy in mode) | cpio -i |
| Overwrite an existing file | cpio -u |
| Extract directories during an extraction | cpio -d |
| Display archive contents without extracting files | cpio -t |
| Copy files to a new archive (copy-pass mode) | cpio -p |
| create a cpio archive of /myfiles (copy-out) | ls ~/myfiles | cpio > myarchive.cpio |
| Extract files from myarchive.cpio archive (copy-in) | cpio –iv < myarchive.cpio |
| Copy files from ~/copyme to ./newdir (copy-pass) | ls ~/copyme | cpio -pvd ./newdir |
| Copy verbosely using cpio | cpio -v |
| Back up the Master Boot record (MBR) to the /root directory using dd | dd if=/dev/sda of=/root/file.mbr bs=512 count=1 |
| Make a full backup using dump | dump -o |
| Make an incremental backup using dump | dump -1 to 9 |
| Specify the number of Kilobytes per dump record using dump | dump -b (max block size) |
| Specify the target using dump | dump -f (location of target file) |
| Specify the compression level in range of 1 to 9 using dump | dump -z (Compression level) |