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Difference between du and adding up the bytes from ls -laR
Can someone expalin the size difference between the two commands : 1. du -ks . 2. ls -laR | awk '{ sum += $5 } END { print sum/1024 }' - $5 is the 5th column that displays the byte count I thought that at least the two figures should be close since both are supposed to display the total...- wube
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- Replies: 5
- Forum: General UNIX discussion
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Using sed to edit string and save the new info to the same file
Ron, As far as I know, ( I'm a newbie too ) sed writes the output to stdout. Therefore you must redirect stdout to a file ( > file2 ). I am also trying to do the same as you, but I was thinking more along these lines: If one can test whether the find and replace was done then we can do... -
Test if numeric
Thanks. That worked. I was on the right track. I did try the following combinations: /^[0-9]/ /[0-9]+$/ but these did not work. Once again, thanks a lot. wube -
Test if numeric
I am currently writing a script that expects input to be keyed in, and I have to verify if the input is numeric or not. #!/bin/sh read input echo $input | awk ' { if ( $0 ~ /[0-9]/ ) printf " input contains numerics only" else printf " input...
