Install Ghostscript and use the following syntax -
gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=final.pdf file1.pdf file2.pdf
Using Ghostscript to concatenate two pdf files
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Posted by Arsh | Labels: Ghostscript, Linux | Posted on Monday, December 6, 2010
Extracting fields from multiple files using awk
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Posted by Arsh | Labels: awk, Linux | Posted on Sunday, February 7, 2010
Say, you have two files file1 and file2 containing data in the tabular form in 3 columns each and you want to extract column 2 of file1 and column 1 of file2. We can do it using the combination of paste and awk commands as follows:
paste file1 file2 | awk '{print $2 " " $4}'
We can do more! Suppose you want to add column 1 of file1 to column 3 of file2. This can be accomplished using the following command:
paste file1 file2 | awk '{print $1-$6}'
paste file1 file2 | awk '{print $2 " " $4}'
We can do more! Suppose you want to add column 1 of file1 to column 3 of file2. This can be accomplished using the following command:
paste file1 file2 | awk '{print $1-$6}'
