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What is dollar in regex?
You can specify that a regular expression match only the beginning or end of the line. If a dollar sign ( $ ) is at the end of the entire regular expression, it matches the end of a line. If an entire regular expression is enclosed by a caret and dollar sign ( ^like this$ ), it matches an entire line.
What does dollar sign do bash?
$IFS is the (input) field separator. $? is the most recent foreground pipeline exit status. $! is the PID of the most recent background command. $0 is the name of the shell or shell script.
How to escape the dollar sign in Bash?
DB_PASS=’A1$Bb%!Y$’ Evidently, the single quotes ‘ results in no interpolation of enclosing characters. Thanks for contributing an answer to Stack Overflow!
Can a dollar sign be used as a password?
I have verified this works when providing credentials whose passwords don’t contain the dollar sign, but I can’t get it to work with the root account. It always produces the Login failed. Password incorrect timeout error. Changing the password is not an option. I have tried to supply the \\ escape character in the password definition like so:
How to send a password with a$ symbol in expect?
Password incorrect. “; exit 1} “*\\$ ” } send_user ” Password is correct ” expect “$ ” { send “ls” } I have verified this works when providing credentials whose passwords don’t contain the dollar sign, but I can’t get it to work with the root account. It always produces the Login failed. Password incorrect timeout error.
How to escape the dollar sign in a string?
Your issue is not with the echo but with the assignment to $filename. This will interpolate the string, which means expanding the variable $name. This will result in $filename having the value sample.mp4 (since $name is presumably undefined, which means it expands to an empty string) echo “$filename” will now result in the expected sample$name.mp4.