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Update dd 

There is a small error in this sample :

**bs=BYTES** --> read and write up to BYTES bytes at a time

**count=N** --> copy only N input blocks

just inverse please
This commit is contained in:
ALJI Mohamed 2017-09-16 22:04:10 +01:00 committed by GitHub
parent d6dc39c687
commit f8d2ce516e
1 changed files with 1 additions and 1 deletions
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cheat/cheatsheets/dd
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@ -1,7 +1,7 @@
# Read from {/dev/urandom} 2*512 Bytes and put it into {/tmp/test.txt} # Read from {/dev/urandom} 2*512 Bytes and put it into {/tmp/test.txt}
# Note: At the first iteration, we read 512 Bytes. # Note: At the first iteration, we read 512 Bytes.
# Note: At the second iteration, we read 512 Bytes. # Note: At the second iteration, we read 512 Bytes.
dd if=/dev/urandom of=/tmp/test.txt count=512 bs=2 dd if=/dev/urandom of=/tmp/test.txt count=2 bs=512
# Watch the progress of 'dd' # Watch the progress of 'dd'
dd if=/dev/zero of=/dev/null bs=4KB &; export dd_pid=`pgrep '^dd'`; while [[ -d /proc/$dd_pid ]]; do kill -USR1 $dd_pid && sleep 1 && clear; done dd if=/dev/zero of=/dev/null bs=4KB &; export dd_pid=`pgrep '^dd'`; while [[ -d /proc/$dd_pid ]]; do kill -USR1 $dd_pid && sleep 1 && clear; done