I have one quick question.
Is it normal that bash (i am using 4.4.11) is not displaying lines/text that is separated / end with plain
I was a bit surprised to see this behavior:
$ a=$(printf "hello\ragain\rgeorge\r\n") $ echo "$a" george
But "hello again" text is still there,somehow "hidden":
$ echo "$a" |od -w32 -t x1c 0000000 68 65 6c 6c 6f 0d 61 67 61 69 6e 0d 67 65 6f 72 67 65 0d 0a h e l l o \r a g a i n \r g e o r g e \r \n
And as soon as we just play with bash is fine.... But is this a potential security risk? What if contents of variable "a" come from outter world and include "bad commands" instead of just hello?
Another test, a bit unsecure this time:
$ a=$(printf "ls;\rGeorge\n") $ echo "$a" George $ eval "$a" 0 awkprof.out event-tester.log helloworld.c oneshot.sh rightclick-tester.py tmp uinput-simple.py <directory listing appears with an error message at the end for command George>
Imagine a hidden
rm instead of a hidden
Same behavior when using echo -e:
$ a=$(echo -e "ls;\rGeorge\r\n"); echo "$a" George
Is it me that does something wrong...?