Convert unix time from variable to normal time in AIX

If you were on Linux, you could simply use:

date -d @1381260225

Or you could use gawk:

echo "1381260225" | gawk '{print strftime("%c",$1)}'

Or Python:

python -c "import datetime; print  datetime.datetime.fromtimestamp(1381865497)"

Or Perl:

perl -e 'print(scalar(localtime(1381865497)), "\n";'

However none of these solutions are available on a stock AIX installation. All of these tools (GNU coreutils, GNU awk, Perl, Python) are available as separate packages as part of the AIX toolbox for Linux applications.

You ask for "known workarounds." Here is a simple one:

$ date -d "$(echo 20140103T1422 | sed 's/T/ /')"
Fri Jan  3 14:22:00 PST 2014

This uses sed to replace "T" with a space. The result is a format that date understands.

If we add seconds onto the ISO8601 date, then date requires more changes:

$ date -d "$(echo 20140103T142211 | sed -r 's/(.*)T(..)(..)(..)/\1 \2:\3:\4/')"
Fri Jan  3 14:22:11 PST 2014

In the above, sed replaces the "T" with a space and also separates HHMMSS into HH:MM:SS.