本篇为我学习AWK的笔记
1. AWK 有3种类型
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AWK − Original AWK from AT & T Laboratory.
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NAWK − Newer and improved version of AWK from AT & T Laboratory.
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GAWK − It is GNU AWK. All GNU/Linux distributions ship GAWK. It is fully compatible with AWK and NAWK.
2. AWK的环境设置
Step 1 − Download the source code from an authentic place. The command-line utility wget serves this purpose.
[jerry]$ wget http://ftp.gnu.org/gnu/gawk/gawk-4.1.1.tar.xz
Step 2 − Decompress and extract the downloaded source code.
[jerry]$ tar xvf gawk-4.1.1.tar.xz
Step 3 − Change into the directory and run configure.
[jerry]$ ./configure
Step 4 − Upon successful completion, the configure generates Makefile. To compile the source code, issue a make command.
[jerry]$ make
Step 5 − You can run the test suite to ensure the build is clean. This is an optional step.
[jerry]$ make check
Step 6 − Finally, install AWK. Make sure you have super-user privileges.
[jerry]$ sudo make install
That is it! You have successfully compiled and installed AWK. Verify it by executing the awk command as follows −
[jerry]$ which awk
On executing this code, you get the following result −
/usr/bin/awk