searching and chaginging

[paublo]

1st, thanks in advance.

heres the problem.

I have a passwd file that i want to change 2 things in it. The home directory location and the word dummy to the actual user's name.

heres an example of whats in the passwd file:

username:x:510:50000:customername:/home/DIR/dummy:/bin/nologin

basically i want to take the 1st letter only of the username, in this case the user is "username", so i want to take the letter u and replace "DIR" with u and to also replace the word "dummy" with the actual username. in this case "username"

im sure theres a way in sed or awk to do this, unfortuantly im not that good with either of them.

thanks again.

 

[feherke]

Hi

sed 's,^\(\(.\)[^:]*\)\(.*/home/\)DIR/dummy,\1\3\2/\1,' /input/file

Tested with GNU [tt]sed[/tt].

Feherke.

http://rootshell.be/~feherke/

 

[feherke]

Hi

awk 'BEGIN{FS=OFS=":"}{sub(/DIR/,substr($1,1,1));sub(/dummy/,$1)}1' /input/file

Tested with [tt]gawk[/tt] and [tt]mawk[/tt].

Feherke.

http://rootshell.be/~feherke/

 

[paublo]

WOW that worked. thats impressive . thanks.

I will be trying to break that down for the next 30 min.

not sure if i can ask you one more thing, if i had a file with just usernames in it and want to created them in /home/1stletter/username, where 1stletter is the 1st letter of the username.

so i have a file with:

auser
buser
cuser

and i want to create

/home/a/auser
/home/b/buser etc

i know

LIST=`$filename`;

for FILE in $LIST

do

sed comand here to take out the 1st letter of the useranme and assign it to another variable.

then i could do

mkdir -p /home/$VAR/$FILE

i know the rest

done

thanks again very much

 

[feherke]

Hi

[blue]master #[/blue] cat namelist
auser
buser
cuser

[blue]master #[/blue] sed 's,\(.\),/home/\1/\1,' namelist
/home/a/auser
/home/b/buser
/home/c/cuser

[blue]master #[/blue] sed 's,\(.\),make -p /home/\1/\1,' namelist
make -p /home/a/auser
make -p /home/b/buser
make -p /home/c/cuser

[blue]master #[/blue] sed 's,\(.\),make -p /home/\1/\1,' namelist | sh
[gray]# here says nothing, just creates the directories[/gray]

Feherke.

http://rootshell.be/~feherke/