why does echo -n "100" | wc -c output 3?
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I just happened to be playing around with a few linux commands and i found that
echo -n "100" | wc -c outputs
3. i knew that 100 could be stored in a single byte as 1100100 so i could not understand why this happened. I guess that it is because of some teminal encoding, is it ? i also found out that if i
touch test.txt and
echo -n "100" | test.txt and then execute
wc ./test.txt -ci get the same output here also my guess is to blame file encoding, am i right ?
echo -n 100, you are showing a string with 3 characters.
When you want to show a character with ascii value 100, use
echo -n "d" # Check echo -n "d" | xdd -b
I found value "d" with
man ascii. When you don't want to use the man page, use
printf "\\$(printf "%o" 100)" # Check printf "\\$(printf "%o" 100)" | xxd -b # wc returns 1 here printf "\\$(printf "%o" 100)" | wc -c
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100 is three characters long, hence wc giving you 3. If you left out the
-n to echo it'd show 4, because echo would be printing out a newline too in that case.
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$ wc --help ... -c, --bytes print the byte counts -m, --chars print the character counts ... $ man echo ... -n do not output the trailing newline ... $ echo -n 'abc' | wc -c 3 $ echo -n 'абс' | wc -c # russian symbols 6
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Alexa has been eavesdropping on you this whole , Yet that's essentially what Amazon has been doing to millions of us with its assistant Alexa in Duration: 3:30 Posted: May 6, 2019 3. whether echo occurs in other meetings except for Teams meeting. Any updates will be highly appreciated. Thanks for your cooperation. Have a good day : )
- The number 100 can be represented in binary encoding as a single byte, but that's not what
echois printing here. It prints a string consisting of the characters "1", "0", and "0". The fact that this character sequence could be interpreted as a number is not relevant here.
- @GordonDavisson thanks for clarification. Thats the only thing that i wanted to know.