I'm trying to get a portion of a line in a text files in bash but instead of the text 'field1' I wanted to use a variable. But it is not working. Suggestions
WORKS:
NomeVar=$(cut -d ":" -f 1 <<< "$(awk /campo1/ { print substr($0,48,10) } /home/ficheiro.txt)")
IT DOES NOT WORK:
fld1=campo1
NomeVar=$(cut -d ":" -f 1 <<< "$(awk /$fld1/ { print substr($0,48,10) } /home/ficheiro.txt)")
Do this:
cut -d ":" -f 1 <<< "$(awk "/$fld1/ { print substr(\awk "/$fld1/ { print substr(\cut -d ":" -f 1 <<< "$(awk "/$fld1/ { print substr(\awk "/$fld1/ { print substr(\%pre%,48,10) }" /home/ficheiro.txt | cut -d ":" -f 1
,48,10) }" /home/ficheiro.txt)"
,48,10) }" /home/ficheiro.txt | cut -d ":" -f 1
,48,10) }" /home/ficheiro.txt)"
Another possibility is to use a pipe, like this:
%pre%More about AWK in this post: link
perl -nlE "/$fld1/ and say m/.{48}([^:]*)/"