grep

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What are the differences between GNU grep's basic/extended and PCRE (`-P`) regular expressions?
user_31636180
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3
1
775
gnu pcre grep regex
get N lines above from the section obtained using sed
user_56186310
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2
5
71
sed grep awk
How to grep and filter out at the same time?
user_151148440
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2
3
188
grep shell
Replace work in line by combining after grep
user_45293170
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1
3
80
cat sed grep awk
Need to grep a specific string using curl
user_161666040
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2
4
1042
curl grep awk bash
Remove some character in the start and in the end using sed
user_131266510
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4
6
134
sed grep awk regex
remove lines from output in bash that contains a huge amount of possibilities
user_809320
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5
6
205
sed grep awk
Grep last match until the end
user_61106310
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1
2
218
string-matching grep
Read a file line by line for an exact match using perl script
user_76208050
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3
3
2146
grep perl
Grep a regex pattern from file which starts with certain pattern
user_64749020
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2
2
113
sed grep awk
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