Linux Awk command All In One
shell script
Awk
AWK (awk /ɔːk/) is a domain-specific language designed for text processing and typically used as a data extraction and reporting tool. Like sed and grep, it is a filter, and is a standard feature of most Unix-like operating systems.
AWK (awk /ɔːk/) 是一种专门用于文本处理的领域特定语言，通常用作数据提取和报告工具。
与 sed 和 grep 一样，它是一个过滤器，并且是大多数类 Unix 操作系统的标准功能。
https://en.wikipedia.org/wiki/AWK
awk language
1988
https://ia803404.us.archive.org/0/items/pdfy-MgN0H1joIoDVoIC7/The_AWK_Programming_Language.pdf
API
https://tldp.org/LDP/abs/html/awk.html
鳥哥的 Linux 私房菜
awk
https://linux.xgqfrms.xyz/linux_basic/1010index.htm
https://linux.xgqfrms.xyz/linux_basic/0330regularex.htm#awk
???
https://www.runoob.com/linux/linux-comm-awk.html
https://www.digitalocean.com/community/tutorials/awk-command-linux-unix
https://www.freecodecamp.org/news/the-linux-awk-command-linux-and-unix-usage-syntax-examples/
demos
# shellcheck shell=dash
___x_cmd____main(){
[ "$#" -gt 0 ] || {
return
}
local op="$1"; shift
case "$op" in
esac
}
https://github.com/web-full-stack/x-cmd/blob/main/mod/api/lib/main
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refs
https://github.com/web-full-stack/x-cmd/issues/1
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