From f8d2ce516ec6b0d467a25632c6b6b3b064fdfade Mon Sep 17 00:00:00 2001 From: ALJI Mohamed Date: Sat, 16 Sep 2017 22:04:10 +0100 Subject: [PATCH] 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 --- cheat/cheatsheets/dd | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/cheat/cheatsheets/dd b/cheat/cheatsheets/dd index a557e13..88d7f4a 100644 --- a/cheat/cheatsheets/dd +++ b/cheat/cheatsheets/dd @@ -1,7 +1,7 @@ # 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 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' 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