Change value of a parameter in a file[solved]


 
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Old 07-09-2012
Change value of a parameter in a file[solved]

I have a requirement to change the value of a parameter in a configuration file at a certain time before a particular script (python script) runs so that it outputs debug logs for the script.

There are lots of other parameters in the file but i wnat to change only this particular parameter.

From
Code:
SQL_TRACE=False

To
Code:
SQL_TRACE=True

How can this be done in awk or sed ??

---------- Post updated at 04:35 PM ---------- Previous update was at 04:12 PM ----------

I got it. Thanks

Code:
/bin/sed 's/SQL_DEBUG=False/SQL_DEBUG=True/' filename > /tmp/$$
mv /tmp/$$ filename

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script(1)							   User Commands							 script(1)

NAME
script - make record of a terminal session SYNOPSIS
script [-a] [filename] DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the record is saved in the file typescript. See WARNINGS. The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends when the forked shell exits or when Control-d is typed. OPTIONS
The following option is supported: -a Appends the session record to filename, rather than overwriting it. NOTES
script places everything that appears on the screen in filename, including prompts. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a privileged user, that is, root. Be sure that typescript is not a link before running script. SunOS 5.11 30 Jan 2004 script(1)