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bash grep

# It can be done in two ways
# 1) Have "grep" read on from the standard input using a pipe
#    and search the input string. Then pipe the result to "wc" to count 
#    the number of occurences

$ line="This is where we select from a table."
# substr="select"

$ echo "$line" | grep "$substr" | wc -l

# 2) or pass a string to "grep" and search the string for a substring
#    pass the result to "wc" to count the number of occurence

$ grep "$substr" <<< "$line" | wc -l
Source by unix.stackexchange.com #
 
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Tagged: #bash #grep
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