runawk

[unixadmin_1]

I got example program written in awk how to compile and run this program..please let me know its urgent

[Venkatesh BL]

# awk -f filename

[Hemmetter]

Hi,

you run that program by calling:
$ awk -f program.file data.file

or you modify the first of programm file to:

#/usr/bin/awk

so that program is executed directly by awk.

rgds
HGH

[unixadmin_1]

with what extensions awk programms are saved and i do not understand wht is program .file and data.file in this: $ awk -f program.file data.file

[Hemmetter]

hi

you are free in naming your awk script. Unix does not know something like file name extensions as windows does ( e.g. *.exe ).

i used "program.file" and "data.file" just as placeholder names. Replace them with the filenames you use.


rgds
HGH

[Venkatesh BL]

If the file is named 'abc', use "awk -f abc" command to execute it.

[unixadmin_1]

i had saved with file name awk and how do i run this program and where do i run this

[Peter Nikitka]

Hi,

it was not the best idea to name your program like the interpreter, 'test' would have been a name, I wouldn't recommend as well.
It may help you, using .awk as a suffix, if you are used to identify your home made programs that way.
NB: An awk program gets interpreted - there is no compiling stage.

1) Rename your awk-program named awk
mv awk prog1.awk
2) Check the first line of your program
sed 1q prog1.awk
3) If the output is not like this
#!/usr/bin/awk -f -
add a line with exactly this text.
4) Add the execute-bit to that program
chmod +x prog1.awk

Every awk program read the stdin, when no filename(s) are provided as parameters.
5) So just calling
./prog1.awk
will wait for data entered
6) ./prog1.awk "file-with-data"
will read that file
7) ... | ./prog1.awk
will read data from the pipe (output of the command "...")

mfG Peter


Now it depends, how your awk program works.

[Venkatesh BL]

"I have assigned points to 0 of 68 responses to my questions. " in your profile does not sound encouraging! :)

Please refer to http://forums11.itrc.hp.com/service/forums/helptips.do?#28 to understand about the member point system.

[Peter Nikitka]

Hi,

I just so the connection to another thread of you:
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1302055

Your question and answers direct me to this awk program, which you should save as
file /usr/local/checkid.awk

#!/usr/bin/awk -f -
BEGIN {FS=":"}
{
# print $1, $3, $5
if ($1 == "+") next
if ($5 == "") {
print "No user name for", $1
}
if ($3 == 0) {
print "superuser", $1, $5
if ($1 != "root") {
print "superuser but not root:", $1, $5, "<******"
}
}

Having done then the steps 1-4 of my previous post, execute this commandline under any directory:
/usr/local/checkid.awk /etc/passwd

Additions:
1) There may other naming services (NIS,...) active, but this could be out of the scope you can handle by yourself.
ypcat passwd | /usr/local/checkid.awk

would examine NIS for example.

2) Can it be, that your clients notice was a direction to UIDs used on this system, not having an entry in a passwd database (/etc/passwd; NIS) at all?
For example, a command like
ls -ld "file-uid-only"
would not show a name in the user column but only a number for a file owned by such an UID.

Good luck!
Peter