Re: traverse through passwd file, and split fields to extract UID/GID

Welcome to the monastery.

There's builtin functions to do this. No need to reinvent this particular wheel. Try this from your command line:

$ perldoc -f getpwent
[download]

-- Ken

Comment on Re: traverse through passwd file, and split fields to extract UID/GID Download Code

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Re^2: traverse through passwd file, and split fields to extract UID/GID by intoperl (Acolyte) on Apr 23, 2014 at 13:15 UTC
Thanks Ken, for bringing up getpwent. BTW, i used the other approach which did not mention getpwent, but still the job was done, by the code below : `my $HAN = "handle"; my $FILE = "passwd.txt"; open("$HAN", "$FILE")\|\|die "Error opening file: $!\n"; while(<$HAN>) { my ($name,$passwd,$uid,$gid,$gcos,$dir,$shell) = split(/:/,$_); print "UID is: $uid\n"; print "GID is: $gid\n"; } close("$HAN");` [download]	[reply] [d/l]
Re^3: traverse through passwd file, and split fields to extract UID/GID by kcott (Archbishop) on Apr 23, 2014 at 13:46 UTC
"Thanks Ken, for bringing up getpwent. BTW, i used the other approach which did not mention getpwent, but still the job was done, ..." You're welcome. I'm glad you found a working solution. For future reference, all of that code could have been replaced by: `while (my @pw = getpwent) { printf "UID is: %s\nGID is: %s\n", @pw[2,3] }` [download] By the way, take a look at open for better ways of doing: `open("$HAN", "$FILE")` -- Ken	[reply] [d/l] [select]