Moving lines within a txt file

Shell Programming and Scripting
1

A newbie to shell scripting.....

I need some assistance in doing the following:

I have a system generated text file(a makefile basically).

Before I can execute the make command, I need to modify one section of this generated file.

The generated section is as follows:

# INCLUDE macro for SCI
#~~~~~~~~~~~~~~~~~~~~~~~
XYZ_MAIN_INCLUDE = \
-I/Path_1 \
-I/Path_2 \
-I/Path_3 \
-I/Path_4

Basically, Path_4 has be placed at the start of the INCLUDE section with appropriate changes to new line delimiters.

This modified section should look as follows:

# INCLUDE macro for SCI
#~~~~~~~~~~~~~~~~~~~~~~~
XYZ_MAIN_INCLUDE = \
-I/Path_4 \
-I/Path_1 \
-I/Path_2 \
-I/Path_3

I have to make similar changes to 6 different files in 6 different locations in the directory structure before I can execute make.

Can I achieve this using a shell script without having to modify all the files manually everytime I need to execute a make?

Thanks in advance for any suggestions.

2

show exact sample of the make file if possible

3

Thank you ghostdog74 for your response.

Not sure if I can post the contents of the entire makefile here:

The section that needs manual editing(with line numbers enabled) looks like this:

66	\# INCLUDE macro for SCI
67	\#~~~~~~~~~~~~~~~~~~~~~~~
68	CDIPOSIX\_MAIN_INCLUDE = \\
69		-I/dev/adapt\_layer/s9cdi/CDIPosix/Posix_Main \\
70		-I/dev/adapt\_layer/s9cdi/CDIPosix/Posix_Main/inc \\
71		-I/dev/adapt_layer/s9cdi/CDIInitialisation/Initialization \\
72		-I/dev/adapt_layer/s9cdi/CDIPosix \\
73		-I/dev/adapt\_layer/s9cdi/CDIPosix/PCK_CDIPosix \\
74		-I/gplus3/source/range/os20/include

The same section after manual editing looks like this:

66	\# INCLUDE macro for SCI
67	\#~~~~~~~~~~~~~~~~~~~~~~~
68	CDIPOSIX\_MAIN_INCLUDE = \\
69		-I/gplus3/source/range/os20/include \\
70		-I/dev/adapt\_layer/s9cdi/CDIPosix/Posix_Main \\
71		-I/dev/adapt\_layer/s9cdi/CDIPosix/Posix_Main/inc \\
72		-I/dev/adapt_layer/s9cdi/CDIInitialisation/Initialization \\
73		-I/dev/adapt_layer/s9cdi/CDIPosix \\
74		-I/dev/adapt\_layer/s9cdi/CDIPosix/PCK_CDIPosix

FYI, this section appears in between the same line numbers always. Does this information help?

Thanks

4 
awk 'FNR==NR{$1="";a[FNR]=$0;next}   
   FNR==4{print $1" "a[9];next}   
   FNR==9{print $1" " a[4]}
   FNR<9{print}   
' "file" "file"

output:

# ./test.sh
66 # INCLUDE macro for SCI
67 #~~~~~~~~~~~~~~~~~~~~~~~
68 CDIPOSIX_MAIN_INCLUDE = \
69  -I/gplus3/source/range/os20/include
70 -I/dev/adapt_layer/s9cdi/CDIPosix/Posix_Main/inc \
71 -I/dev/adapt_layer/s9cdi/CDIInitialisation/Initialization \
72 -I/dev/adapt_layer/s9cdi/CDIPosix \
73 -I/dev/adapt_layer/s9cdi/CDIPosix/PCK_CDIPosix \
74  -I/dev/adapt_layer/s9cdi/CDIPosix/Posix_Main \

not sure is it what you want.

5

Thank you ghostdog74 for your reply.

Yes from the output this is what I want....but......

As I mentioned earlier, I have 6 files(a.mak, b.mak.....f.mak) in various locations in the directory structure, the contents of which needs to be similarly modified before I can invoke make.

Assuming I provide the location/paths of all 6 files somewhere in this script, will this script make modifications as above and save the files or is that too much to ask for?

6

if you can do it on one file, you can do it on many files (of the same type). just need to do some scripting ..