I want to search a file with name file.txt in a directory and replace entire line in those files with a string aprun by another line vasprun = "mpirun -np 64 vasp"
How can I do this with awk or sed or any other bash utility?
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2 Answers
With GNU bash and GNU sed:
shopt -s globstar
sed -i 's/.*aprun.*/vasprun = "mpirun -np 64 vasp"/' -- **/file.txt
From man bash:
globstar: If set, the pattern ** used in a pathname expansion context will match all files and zero or more directories and subdirectories. If the pattern is followed by a /, only directories and subdirectories match.
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You can also find the file using the find command and pipe the output to sed command
find . -name file.txt | sed -i 's/.*aprun.*/vasprun = "mpirun -np 64 vasp"/g'
