e a program that takes a string as a command-line argument and then s from stdin until the user closes stdin (with ctrl-d). It should print line that contains the given string. It should be case-sensitive by alt, but case-insensitive if the command line option -i is given before tring. ep ello o there o there here sun is yellow # input sun is yellow # output OW # input # output # input, ignored since it doesn't contain "ello" # input, ignored since "ello" is case-sensitive # close stdin

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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grep.c
Write a program that takes a string as a command-line argument and then
reads from stdin until the user closes stdin (with ctrl-d). It should print
every line that contains the given string. It should be case-sensitive by
default, but case-insensitive if the command line option -i is given before
the string.
./grep ello
Hello there
# input
Hello there
# output
# input, ignored since it doesn't contain "ello"
Hi there
The sun is yellow # input
The sun is yellow # output
YELLOW
# input, ignored since "ello" is case-sensitive
"D
# close stdin
./grep -i ello
# input
# output
# input
# output
Hello there
Hello there
YELLOW
YELLOW
"D
# close stdin
Transcribed Image Text:grep.c Write a program that takes a string as a command-line argument and then reads from stdin until the user closes stdin (with ctrl-d). It should print every line that contains the given string. It should be case-sensitive by default, but case-insensitive if the command line option -i is given before the string. ./grep ello Hello there # input Hello there # output # input, ignored since it doesn't contain "ello" Hi there The sun is yellow # input The sun is yellow # output YELLOW # input, ignored since "ello" is case-sensitive "D # close stdin ./grep -i ello # input # output # input # output Hello there Hello there YELLOW YELLOW "D # close stdin
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