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The awk command , named for its developers (Aho, Weinberger, and Kernighan), is more of a database manipulation utility. It can identify lines with a keyword, and read out the text from a specified column in that line.
A common example is with of every user with a listing of "mike".
# awk '/mike/ {print $l}' /etc/passwd
Awk is one of the most powerful tools in Linux used for processing the rows and columns in a file. Awk has built in string functions and associative arrays. Awk supports most of the operators, conditional blocks, and loops available in C language.
By default, awk works on files that have columns of numbers or strings that are separated by white space (tabs or spaces), but the -F option can be used if the columns are separated by another character. awk refers to the first column as $1, the second column as $2, etc. The whole line referred to as $0.
The awk command , named for its developers (Aho, Weinberger, and Kernighan), is more of a database manipulation utility. It can identify lines with a keyword, and read out the text from a specified column in that line.
A common example is with of every user with a listing of "mike".
# awk '/mike/ {print $l}' /etc/passwd
Awk is one of the most powerful tools in Linux used for processing the rows and columns in a file. Awk has built in string functions and associative arrays. Awk supports most of the operators, conditional blocks, and loops available in C language.
By default, awk works on files that have columns of numbers or strings that are separated by white space (tabs or spaces), but the -F option can be used if the columns are separated by another character. awk refers to the first column as $1, the second column as $2, etc. The whole line referred to as $0.
