Adding lines to file

[skizo898]

I have this file and i need a command to permanently add a line of code to the file and sort the file by ID. I was able to add a line with the echo command but its not permanent. Any help is appreciated.

111:Smith:Mary:Davison:Attorney
222:Stumblebum:Jason:Novi:Student
229:Esposito:Amy:Toronto:Artist
444:Adams:Mary:San Francisco:Psychiatrist
555:Roberts:Tim:Fenton:Student
666:Koresh:Ken:Fenton:Student
777:Gibson:Andrew:Linden:Merchandiser

[yancek]

What programming language are you using?
The echo command prints to screen and doesn't by itself write to any file. ]

Actually, it would be best if you indicated what programming language and whether this is something you will need a script for, you will be doing it on a regular basis?

[polypagan]

I'm assuming you are scripting in bash (or some shell), and that you only and always want to append a final line to the file.


On command line or in bash (or other shell) script

echo "Line of text" >>filename

appends Line of text to file named filename, permanently.

In scripts, text line and filename may be/probably are variables, so you need to properly escape them (may contain special characters). Any good scripting tutorial should describe this.

Does that help?

[abarclay]

I don't mean to point out the obvious, but this clearly appears to be a class question.
The other poster already mentioned echo and redirection, so you should be fine there.. As for the sorting, I would use "man sort". Specifically, you need probably need to use the -n option (unless you can be 100% sure that the numeric id's are all exactly 3 characters long). Try adding an entry with an id of 99 and watch what happens.

Also, you'll need to sort by field....