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Full Discussion: awk - function to return permutations of n items out of m
Top Forums Shell Programming and Scripting awk - function to return permutations of n items out of m Post 303028500 by nezabudka on Wednesday 9th of January 2019 02:37:19 PM
Old 01-09-2019
Thank you all for an evaluation
Probably there should replace the heavyweight utility "xargs" and wrap everything in a function
like so
Code:
#!/bin/bash
prt() {
        str=$(seq -s"{$1..$2}" $3)
        eval echo ${str//[0-9]}
}
prt a e $((3+1)) | fmt -1 | sed 's/./& /g'

Or insert a loop "for in" as suggested above.
In ksh93 works too
Last edited by nezabudka; 01-09-2019 at 03:54 PM..
 

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LEARN ABOUT SUNOS

sccs-prt

sccs-prt(1)							   User Commands						       sccs-prt(1)

NAME

       sccs-prt, prt - display delta table information from an SCCS file

SYNOPSIS

       /usr/ccs/bin/prt [-abdefistu] [-cdate-time] [-rdate-time] [-ysid] s.filename...

DESCRIPTION

       prt prints selected portions of an SCCS file.  By default, it prints the delta table (version log).

       If  a  directory  name  is  used  in place of the s.filename argument, the prt command applies to all s.files in that directory. Unreadable
       s.files produce an error; processing continues with the next file (if any). The use of `-' as the s.filename argument  indicates  that  the
       names of files are to be read from the standard input, one s.file per line.

OPTIONS

       If any option other than -y, -c, or -r is supplied, the name of each file being processed (preceded by one NEWLINE and followed by two NEW-
       LINE characters) appears above its contents.

       If none of the -u, -f, -t, or -b options are used, -d is assumed. -s, -i are mutually exclusive, as are -c and -r.

       -a	       Display log entries for all deltas, including those marked as removed.

       -b	       Print the body of the s.file.

       -d	       Print delta table entries.  This is the default.

       -e	       Everything.  This option implies -d, -i, -u, -f, and -t.

       -f	       Print the flags of each named s.file.

       -i	       Print the serial numbers of included, excluded, and ignored deltas.

       -s	       Print only the first line of the delta table entries; that is, only up to the statistics.

       -t	       Print the descriptive text contained in the s.file.

       -u	       Print the user-names and/or numerical group IDs of users allowed to make deltas.

       -cdate-time     Exclude delta table entries that are specified cutoff date and time. Each entry is printed as a single  line,  preceded	by
		       the  name  of  the  SCCS  file.	 This format (also produced by -r , and -y) makes it easy to sort multiple delta tables in
		       chronological order. When both -y and -c, or -y and -r are supplied, prt stops printing when the first of  the  two  condi-
		       tions is met.

       -rdate-time     Exclude delta table entries that are newer than the specified cutoff date and time.

       -ysid	       Exclude	delta  table  entries made prior to the SID specified.	If no delta in the table has the specified SID, the entire
		       table is printed.  If no SID is specified, the most recent delta is printed.

USAGE

   Output Format
       The following format is used to print those portions of the s.file that are specified by the various options.

	 o  NEWLINE

	 o  Type of delta (D or R)

	 o  SPACE

	 o  SCCS delta	ID (SID)

	 o  TAB

	 o  Date and time of creation in the form: yy/mm/dd hh/mm/ss

	 o  SPACE

	 o  Username the delta's creator

	 o  TAB

	 o  Serial number of the delta

	 o  SPACE

	 o  Predecessor delta's serial number

	 o  TAB

	 o  Line-by-line change statistics in the form: inserted/deleted/unchanged

	 o  NEWLINE

	 o  List of included deltas, followed by a NEWLINE (only if there were any such deltas and the -i options was used)

	 o  List of excluded deltas, followed by a NEWLINE (only if there were any such deltas and the -i options was used)

	 o  List of ignored deltas, followed by a NEWLINE (only if there were any such deltas and the -i options was used)

	 o  List of modification requests (MRs), followed by a NEWLINE (only if any MR numbers were supplied).

	 o  Lines of the delta commentary (if any), followed by a NEWLINE.

EXAMPLES

       Example 1: Examples of prt.

       The following command:

       example% /usr/ccs/bin/prt -y program.c

       produces a one-line display of the delta table entry for the most recent version:

       s.program.c:  D 1.6   88/07/06 21:39:39 username   5 4 00159/00080/00636...

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWsprot 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       sccs(1),  sccs-cdc(1),  sccs-delta(1),  sccs-get(1),  sccs-help(1),  sccs-prs(1),  sccs-sact(1),  sccs-sccsdiff(1),  what(1),  sccsfile(4),
       attributes(5)

DIAGNOSTICS

       Use the SCCS help command for explanations (see sccs-help(1)).

SunOS 5.10							    5 Oct 1990							       sccs-prt(1)
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