when i am trying to remove consecutive duplicate lines with
awk "!x[$0]++" file
its reporting x[: Event not found.
even the same case with
sed -i -e "$!N; /^\(.*\)\n\1$/!P;D" file as well reporting
N: Event not found. i tried with single quotes too, it didn't help
Any idea to fix those
You're invoking the shell's history substitution. Surround the exclamation point with single quotes.
"Hello" with echo "\"Hello\"" in tcsh shellit saying Unmatched ". can you please fix this
echo '"Hello"'
echo "'!'hello" prints '!'hello, and echo '!hello' prints hello: Event not found.. It's generally more reliable to escape ! characters with backslashes. (csh/tcsh syntax is not consistent and typically requires either trial and error or a different shell.)