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Full Discussion: advanced awk
Top Forums Shell Programming and Scripting advanced awk Post 302409266 by radoulov on Wednesday 31st of March 2010 01:47:42 PM
Old 03-31-2010
This one should work:
Code:
awk -v uname="user1" 'END {
  while (++j <= i) print netgroups[j]
  }
NF == 2 { currgrp = $1 }
$0 ~ uname { netgroups[++i] = currgrp }
' group_file

Use gawk, nawk or /usr/xpg4/bin/awk on Solaris.

---------- Post updated at 07:47 PM ---------- Previous update was at 07:39 PM ----------

Quote:
Originally Posted by scottn
It was a bit complicated, I think for the task?
[...]
Sure, no END block is needed Smilie


Code:
awk  'NF == 2 { g = $1 }
$NF ~ u && $0 = g x
' u="user1" group_file

One of the previous solutions will fail if the username is 0 Smilie

... and my code assumes unique group names.

Last edited by radoulov; 03-31-2010 at 02:52 PM..
 

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END(7)								   SQL Commands 							    END(7)

NAME
END - commit the current transaction SYNOPSIS
END [ WORK | TRANSACTION ] DESCRIPTION
END commits the current transaction. All changes made by the transaction become visible to others and are guaranteed to be durable if a crash occurs. This command is a PostgreSQL extension that is equivalent to COMMIT [commit(7)]. PARAMETERS
WORK TRANSACTION Optional key words. They have no effect. NOTES
Use ROLLBACK [rollback(7)] to abort a transaction. Issuing END when not inside a transaction does no harm, but it will provoke a warning message. EXAMPLES
To commit the current transaction and make all changes permanent: END; COMPATIBILITY
END is a PostgreSQL extension that provides functionality equivalent to COMMIT [commit(7)], which is specified in the SQL standard. SEE ALSO
BEGIN [begin(7)], COMMIT [commit(7)], ROLLBACK [rollback(7)] SQL - Language Statements 2010-05-14 END(7)
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