Shell Programming and Scripting

<name>A<\name>
<id>A1<\id>
<add>A2<\add>
<id>B1<\id>
<name>B<\name>
<add>B2<\add>
<add>C2<\add>
<id>C1<\id>
<name>C<\name>

<name>A<\name>
<id>A1<\id>
<add>A2<\add>
<name>B<\name>
<id>B1<\id>
<add>B2<\add>
<name>C<\name>
<add>C2<\add>
<id>C1<\id>

sort -t '>' -k2 file

sort -t '>' -k2r file

sed 's/>/</' file | sort -t '<' -k3,3 | sed 's/</>/2'

#!/usr/bin/env bash

# @(#) s1	Demonstrate multiple field delimiters, msort.

# Utility functions: print-as-echo, print-line-with-visual-space, debug.
# export PATH="/usr/local/bin:/usr/bin:/bin"
LC_ALL=C ; LANG=C ; export LC_ALL LANG
pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && . $C msort

FILE=${1-data1}

pl " Input data file $FILE:"
cat $FILE

pl " Results:"
msort -l -q -j -un -d"<>" -n2 -c "lexicographic" $FILE

exit 0

$ ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian 5.0.8 (lenny, workstation) 
bash GNU bash 3.2.39
msort 8.44

-----
 Input data file data1:
<name>A<\name>
<id>A1<\id>
<add>A2<\add>
<id>B1<\id>
<name>B<\name>
<add>B2<\add>
<add>C2<\add>
<id>C1<\id>
<name>C<\name>

-----
 Results:
<name>A<\name>
<id>A1<\id>
<add>A2<\add>
<name>B<\name>
<id>B1<\id>
<add>B2<\add>
<name>C<\name>
<id>C1<\id>
<add>C2<\add>