Menu
I need to make a bash script which loops through a bunch of .txt files in a directory, then searches each .txt for a string, and returns the entire line that string appears on
I know how to look through all the .txt files in the directory,
I just need to be pointed in the right direction for searching the file itself, and returning a line based on a match in that line
546
The syntax is as follows for bash, ksh, zsh, and all other shells to read a file line by line: while read -r line; do COMMAND; done < input. file.
The grep command searches through the file, looking for matches to the pattern specified. To use it type grep , then the pattern we're searching for and finally the name of the file (or files) we're searching in. The output is the three lines in the file that contain the letters 'not'.
You can use grep with -A n option to print N lines after matching lines. Using -B n option you can print N lines before matching lines. Using -C n option you can print N lines before and after matching lines.
Using the wc -l command is the most used and also the easiest way to find line numbers of a given file.
Within one dir
grep "search string" *.txt
Search or go to sub-dir
find /full/path/to/dir -name "*.txt" -exec grep "search string" {} ;\
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
