Shell Programming and Scripting

Hello,

Simple if you know how, which I don't....

I would like to add a line to file file.env

file.env consists of the following :

line 1-20 here ..
# Begin customizations

$AVARIABLE/dir1/dir2;export $AVARIABLE

# End customizations
eof

I would like to use a shell script to add the line $AVARIABLE/dir1/dir2;export $AVARIABLE, but it has to come after # Begin customizations

Any idea how to do this please ? Thanks for your time.

Cheers,

Python alternative:

Code:

#!/usr/bin/python
all_lines = open("input.txt").readlines()
all_lines = [a.strip() for a in all_lines]
ind = all_lines.index("# Begin customizations")
all_lines.insert(ind+1,'$AVARIABLE/dir1/dir2;export $AVARIABLE')
print "\n".join(all_lines)

sed '1a\
$AVARIABLE/dir1/dir2;export $AVARIABLE' file.env > tmp
mv tmp file.env

This will append the line after

# Begin customizations

Regards,
cskumar.

cat file.env | awk '{print $0 }{if ($0 == "# End customizations")print "$AVARIABLE/dir1/dir2;export $AVARIABLE" }'


you redirect it to file then rename the file

thanks all for your help.