getting data to the end of a line

[lawrenzo_1]

hello all,

I would like some help on getting all information from a line after a certain string:

# id user

uid= (user) gid= (grp) groups=(grp),(grp),30331(grp),(grp),(grp), etc etc

I want to count how many grps a user is in by using awk so how do I get awk to display all information and including the field groups=(grp).

# awk -F',' '???????? {print NF}'

thanks in advance.

Chris.

[Arturo Galbiati · Accepted solution]

Hi,
awk -F"groups=" '{n=split($2,a,",")}; END {for (i=1;i<=n;i++) print i "-" a[i]}' f1

this is the result:
salvador/home/galbiati/> cat f1
uid= (user) gid= (grp) groups=(grp1),(grp2),30331(grp3),(grp4),(grp5)

salvador/home/galbiati/> awk -F"groups=" '{n=split($2,a,",")}; END {for (i=1;i<=n;i++) print i "-" a[i]}' f1
1-(grp1)
2-(grp2)
3-30331(grp3)
4-(grp4)
5-(grp5)
salvador/home/galbiati/>

if you want format the output fill free to change the last print.

HTH,
Art

[blah2blah]

why not just do it in the shell

iduser=$(id user)
groups="groups${iduser#*groups}"
print $groups

[blah2blah]

or just use

id -G, or the groups command

[blah2blah]

id user | awk -F"=" '{print $4;}'

[Victor BERRIDGE]

groups |wc -w
Shoould do...


All the best
Victor

[blah2blah]

> I would like some help on getting all information from a line after a certain string:

probably the easy way is to use the shell


${parameter#pattern}
${parameter##pattern}
If the shell pattern matches the beginning of the value of parameter, the value of this substitution is the value of the parameter with the matched portion deleted; otherwise the value of this parameter is substituted. In the former case, the smallest matching pattern is deleted; in the latter case, the largest matching pattern is deleted.

${parameter%pattern}
${parameter%%pattern}
If the shell pattern matches the end of the value of parameter, the value of parameter with the matched part is deleted; otherwise substitute the value of parameter. In the former, the smallest matching pattern is deleted; in the latter, the largest matching pattern is deleted.

Where the form of the patterns is the Pattern Matching Notation defined by regexp(5).

[Peter Nikitka]

Hi,

if the context does not allow the use of the groups command, try the following. Having only a SUN at hand now, I see
id -a
uid=466(ef3nip00) gid=1710(nsd) groups=1710(nsd),232(audmcumc),1500(m2nck)

and use
id -a | awk '{g=split($3,a,",");print $1,$2,g"_"$3}'

to get the number of groups "3" inserted:
uid=466(ef3nip00) gid=1710(nsd) 3_groups=1710(nsd),232(audmcumc),1500(m2nck)

mfG Peter

[Srikanth Arunachalam]

Hi,

The credit goes to Arturo. I simple want to debug and show the beauty of one-liner in 3 -steps.

xyz.abc.com> id
uid=5133(rc_prd) gid=17425(rc_prd) groups=17425(rc_prd),2337(bdlexch),6075(xcollftp),18660(svc_ficd)

xyz.abc.com> id|awk -F "groups=" '{print $2}'

17425(rc_prd),2337(bdlexch),6075(xcollftp),18660(svc_ficd)

xyz.abc.com> id|awk -F"groups=" '{n=split($2,a,",")}; END {for (i=1;i<=n;i++) print i "-" a[i]}'

1-17425(rc_prd)
2-2337(bdlexch)
3-6075(xcollftp)
4-18660(svc_ficd)

Thanks,
Srikanth

[lawrenzo_1]

ok thanks all, some good examples that i can adapt.

Blah2blah - thanks for the detailed functionality.

have a nice weekend

Chris.