unix%:~/tmp$ cat tmp.txt z=0.016728 NH=5.7E20 Center for spectra: 2:00:14.906, +31:25:45.826 I would like for the value of z to be set to a variable named $redsh, the value of NH to be $abun, and the values for the center to be $xc and $yc respectively.
How do I go about doing this?
2 Answers
I’d use sed to replace the values from the file, add set and run eval on the whole thing:
eval `sed 's/z=/set redsh=/;s/NH=/abun=/;s/.*: \(.*\), \(.*\)/xc=\1 yc=\2/' tmp.txt` Example run
% unset redsh abun xc yc % cat tmp.txt z=0.016728 NH=5.7E20 Center for spectra: 2:00:14.906, +31:25:45.826 % eval `sed 's/z=/set redsh=/;s/NH=/abun=/;s/.*: \(.*\), \(.*\)/xc=\1 yc=\2/' tmp.txt` % set abun 5.7E20 … redsh 0.016728 … xc 2:00:14.906 yc +31:25:45.826 Note however that: You shouldn't use the C shell. Use the Bourne shell.
Read man csh;man grep;man cut;man awk;man tr and do something like
set redsh = "`grep -E '^z=' tmp.txt | cut -d= -f2`" set abun = "`grep -E '^NH=' tmp.txt | cut -d= -f2`" set xc = "`grep -E '^Center for spectra: ' tmp.txt | cut -d, -f1 | cut '-d ' -f4`" set yc = "`grep -E '^Center for spectra: ' tmp.txt | cut -d, -f2 | tr -d ' '`" 
