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Top Forums UNIX for Beginners Questions & Answers Need to save output of echo and awk to a file Post 303036731 by MadeInGermany on Tuesday 9th of July 2019 02:38:43 PM
Old 07-09-2019
Quote:
Originally Posted by bakunin
...
Code:
command1 &&  command2 || echo "something went wrong with command 1"

...
Actually it is
Code:
command1 &&  command2 || echo "something went wrong with command 1 or command 2"

Test it with true and false commands!

Another solution to the original question: redirect a { command1; command2; } group.
Code:
{ echo 'host_entries:' && awk '{printf "  %s:\n     ip: %s\n", $2, $1}' hosts2.txt; } > hosts2.yml

As was said earlier, an unconditional ; is simpler than the &&.
The command group is smarter than a ( command1; command2 ) sub shell.
Note that the command group requires a ; or a newline before the closing } - while the sub shell does not require it before the closing ).
BTW, in the previous post the $( ) is a sub shell, too. But all the output is stored in a variable aka memory first - this is far from being efficient.
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgawk | +--------------------+-----------------+ |Interface Stability | Volatile | +--------------------+-----------------+ NOTES
Source for gawk is available on http://opensolaris.org. Free Software Foundation Nov 3 1999 IGAWK(1)
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