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Shell Programming and Scripting

Extract a block of text??

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Top Forums Shell Programming and Scripting Extract a block of text??
# 8  
Old 01-25-2011
Quote:
Originally Posted by marcozd
How do I use this? What part do I place in the shell script to make this usable?
Ummm.. it is a shell script. You just run it.
# 9  
Old 01-25-2011
Quote:
Originally Posted by Perderabo
Ummm.. it is a shell script. You just run it.
Yes thanks. I realize that.Smilie But I have more than one output file so I don't understand why there is a part on my example output file within your suggestion.
# 10  
Old 01-25-2011
I'm not sure what the problem is. I did leave in a debug statement and I edited my post to remove it. I piped the scipt though head to cut down on the output which is why only part of your data shows. You should not use head. Run the script yourself without the head, you will see all of the data.

If you must have the perl script embedded in another language it would help if you would reveal which language. Guessing bash... here you go. But note that I'm piping through head again... you still see only part of your data.
Code:
$ cat form2
#! /bin/bash
echo I am a bash script
exec < datafile
#
#
perl -wn -e '
BEGIN {$state="skip";};
/^-+$/           and do {$state="proc"; print; next LINE};
/EQUIL/          and do {$state="copy";};
$state eq "skip" and do {next LINE;};
/^\s*$/          and do {last LINE;};
$state eq "copy" and do {print ; next LINE;};
$state eq "proc" and do { printf "%-10s   %6s  %16s %16s %16s\n", split(" ", $_);};
'
#
exit 0
$ ./form2 | head
I am a bash script
***** EQUILIBRIUM GEOMETRY LOCATED *****
COORDINATES OF ALL ATOMS ARE (ANGS)
ATOM CHARGE X Y Z
------------------------------------------------------------
MOLYBDENUM     42.0      5.9067578125     5.0087332497    17.4699146400
SULFUR         16.0      7.9742837782     3.7588015097    17.3910898169
SULFUR         16.0      5.0973219622     3.0091611327    16.3724427108
SULFUR         16.0      3.8536412225     4.7600928861    18.7261323168
SULFUR         16.0      6.7241053728     5.6252659948    19.6631739883
$

# 11  
Old 01-25-2011
Quote:
Originally Posted by Perderabo
I'm not sure what the problem is. I did leave in a debug statement and I edited my post to remove it. I piped the scipt though head to cut down on the output which is why only part of your data shows. You should not use head. Run the script yourself without the head, you will see all of the data.

If you must have the perl script embedded in another language it would help if you would reveal which language. Guessing bash... here you go. But note that I'm piping through head again... you still see only part of your data.
Code:
$ cat form2
#! /bin/bash
echo I am a bash script
exec < datafile
#
#
perl -wn -e '
BEGIN {$state="skip";};
/^-+$/           and do {$state="proc"; print; next LINE};
/EQUIL/          and do {$state="copy";};
$state eq "skip" and do {next LINE;};
/^\s*$/          and do {last LINE;};
$state eq "copy" and do {print ; next LINE;};
$state eq "proc" and do { printf "%-10s   %6s  %16s %16s %16s\n", split(" ", $_);};
'
#
exit 0
$ ./form2 | head
I am a bash script
***** EQUILIBRIUM GEOMETRY LOCATED *****
COORDINATES OF ALL ATOMS ARE (ANGS)
ATOM CHARGE X Y Z
------------------------------------------------------------
MOLYBDENUM     42.0      5.9067578125     5.0087332497    17.4699146400
SULFUR         16.0      7.9742837782     3.7588015097    17.3910898169
SULFUR         16.0      5.0973219622     3.0091611327    16.3724427108
SULFUR         16.0      3.8536412225     4.7600928861    18.7261323168
SULFUR         16.0      6.7241053728     5.6252659948    19.6631739883
$

Yes - I would need it as a bash script. Thanks for your help. I will let you know how it goes.

---------- Post updated at 03:40 PM ---------- Previous update was at 03:36 PM ----------

Quote:
Originally Posted by marcozd
Yes - I would need it as a bash script. Thanks for your help. I will let you know how it goes.
One other thing - where do I put my input file?

For previous scripts, I usually define a variable like $DAT.log for the name of the output file.

Then in the command line I put DAT=name_of_output_file ./shellscript.sh

Is this how it would work with your suggestion?
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