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Forum: Shell Programming and Scripting 05-23-2011

extract last 8 characters from a file name

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# a=whatever20110520 # t=${a%????????} # echo...

# a=whatever20110520
# t=${a%????????}
# echo ${a##$t}
20110520# echo $a | tail -c 9
20110520# echo $a | cut -c$((${#a}-8+1))-
20110520
# echo $a | sed 's/.*$........$$/\1/'
20110520

Forum: Shell Programming and Scripting 05-23-2011

extract last 8 characters from a file name

14,671

Posted By

If you have gnu grep tail -1 filename | grep...

If you have gnu grep
tail -1 filename | grep -Eo '.{8}$'

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