Help with using sed

ETC Homework & Coursework Questions
1

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

  1. The problem statement, all variables and given/known data:

Use sed command to add the contents of variable my1stname to the beginning of file myinfo and show the results on the screen.

  1. Relevant commands, code, scripts, algorithms:

sed

  1. The attempts at a solution (include all code and scripts):
    These might be terrible but here is my attempt:

cohenb@atlas:~$ cat myinfo | sed `/cat myinfo`/ i\$my1stname
bash: /cat: No such file or directory
sed: -e expression #1, char 1: unterminated address regex
cohenb@atlas:~$ cat myinfo | sed `/cat myinfo`/ i\` $my1stname`
> ^C
bash: :s^C: substitution failed
>
cohenb@atlas:~$ cat myinfo | sed/cat myinfo/ i\cat temp1
bash: sed/cat: No such file or directory

  1. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
    Sheridan College, Brampton, Canada, Roy Hasanizadeh, SYST 13416 Linux/Unix Operating Systems

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).

2

Why sed .. Why not in this way ..

$ echo $my1stname ; cat myinfo
3 
sed "1s/^/$my1stname -> /" myinfo
1 Like
4 
sed "1 i $my1stname" input_file

1 => first line
i => insert
$my1stname => insert this

If you want to make the changes inline, use -i option

sed -i "1 i $my1stname" input_file

HTH
--ahamed

5

Hi friends,

I am new to Unix.. I tried to ftp a file using the PASSWORD "7Vk84i&87E". I have assign this password to a variable and using it in ftp step and it is not working..

Need your help.......

note: If give the password directly instead of using a parameter I am able to login to the server

6

THANK YOU SO MUCH !!!!

balajesuri
and Ahmed101