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Top Forums Shell Programming and Scripting Shell Script to replace tokens in multiple files Post 302251002 by rubin on Friday 24th of October 2008 06:33:14 PM
Old 10-24-2008
The replacement part itself ( replaceScript.sh script ) is not very hard. The point is that the *ABC scripts will be running multiple times, and after their first change through the replacement script, there won't be any more tags @..@ left in them ( or am I missing something here ? ), and you need to change those values back again in the future.

Code:
    before 			after
VAR_MAN_NAME="@MAN_NAME@"  VAR_MAN_NAME=other         NO more tags @..@!
VAR_PORT_NUM="@PORT_NUM@"  VAR_PORT_NUM=1001 
VAR_TEST_NUM="@TEST_NUM@"  VAR_TEST_NUM=20

So how are you planning to rechange the new values ( other,1001,20,...) to the old tag values @..@, for the next run ?

Are the variable names VAR_MAN_NAME, VAR_PORT_NUM,..., the same in all *ABC scripts ? If so, you can replace their values based on their unique names in all the files.

Another way, you might use their same record number ( NR ) in all the files, if they are in the same position.

I think you need to provide more details about the unique properties of these variables.
 

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SCRIPT(1)						    BSD General Commands Manual 						 SCRIPT(1)

NAME
script -- make typescript of terminal session SYNOPSIS
script [-a] [-f] [-q] [-t] [file] DESCRIPTION
Script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1). If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript. Options: -a Append the output to file or typescript, retaining the prior contents. -f Flush output after each write. This is nice for telecooperation: One person does `mkfifo foo; script -f foo' and another can super- vise real-time what is being done using `cat foo'. -q Be quiet. -t Output timeing data to standard error. This data contains two fields, separated by a space. The first field indicates how much time elapsed since the previous output. The second field indicates how many characters were output this time. This information can be used to replay typescripts with realistic typing and output delays. The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not set) for the C-shell, csh(1)). Certain interactive commands, such as vi(1), create garbage in the typescript file. Script works best with commands that do not manipulate the screen, the results are meant to emulate a hardcopy terminal. ENVIRONMENT
The following environment variable is utilized by script: SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most shells set this variable automatically). SEE ALSO
csh(1) (for the history mechanism), replay(1). HISTORY
The script command appeared in 3.0BSD. BUGS
Script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects. Linux July 30, 2000 Linux
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