Shell Programming and Scripting

[root@D152153 tmp]# awk 'NR==FNR\
{
  a[++i]=$0;next
}
{
  b[++j]=$0;
}
END\
{
  for(k=1;k<=j;k++)
    {
       print "COMMAND " a[k] " COMMAND_OPTION " b[k]
    }
}' f1 f2

COMMAND A COMMAND_OPTION 1
COMMAND B COMMAND_OPTION 2
COMMAND C COMMAND_OPTION 3

awk 'NR==FNR{a[++i]=$0;next}{ b[++j]=$0;}END{ for(k=1;k<=j;k++){print"COMMAND " a[k] "COMMAND_OPTION " b[k] }}' file1 file2
COMMAND COMMAND_OPTION line1_form_file1
COMMAND COMMAND_OPTION line2_form_file1
COMMAND COMMAND_OPTION line3_form_file1
COMMAND COMMAND_OPTION line1_from_file2
COMMAND COMMAND_OPTION line2_from_file2
COMMAND COMMAND_OPTION line3_from_file2

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

#!/bin/sh
nawk 'NR==FNR\
{
  a[++i]=$0;next
}
{
  b[++j]=$0;
}
END\
{
  for(k=1;k<=j;k++)
    {
       print "\n======== " a[k] " ========"   
       ls -la
    }
}' file1 file2

system("ls -la");