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Shell Programming and Scripting

How to remove the complete line?

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Top Forums Shell Programming and Scripting How to remove the complete line?
# 1  
Old 03-12-2014
Display How to remove the complete line?
Hello

This is my first post in this site

I have the next txt file "Employee.txt" with the next data
Code:
ID Name      Department Salary
1  Alejandro IT                1000
2  Alan         HR              3000
3  Lupe        IT                2500
4  Lili           Desing        1500

i need to create a script in Unix, the user has to provide the Id to remove from the file.

For example, if the use type id=3, then i have to remove the complete line from the file,

results:
Code:
ID Name      Department Salary
1  Alejandro IT               1000
2  Alan         HR             3000
4  Lili           Desing        1500

i hope you can help me, thank you and regards
Last edited by vbe; 03-12-2014 at 02:43 PM..
# 2  
Old 03-12-2014
Code:
egrep -v "^3 " <filename>

when you create your script and use a var name of id, by example, it would be something like...

Code:
...
id=${1}   #if id is passed as argument 1
egrep -v "^${id} " <filename>
...

# 3  
Old 03-12-2014
just to be a little more careful

egrep -w -v "^3" <filename>

would be little more safer. I do see a space/tab in the above regex, but a -w will ensure you are deleting like that as your id as the first 'word'
# 4  
Old 03-12-2014
The question sounds like a homework assignment.

Also looks like OP is interested in a shell script not any utility.
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