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tldr:too long don't read的简称,相比man help只显示常用命令的用法,且比较简明易懂
安装可用npm pip等,例如:pip install tldr
安装后可sudo tldr -u
比如要查awk常用命令,使用效果如下(该演示是linux环境,windows也可以安装)
- www-data@rjyby07:~$ tldr awk
- # awk
-
- A versatile programming language for working on files.
- More information: <https://github.com/onetrueawk/awk>.
-
- - Print the fifth column (a.k.a. field) in a space-separated file:
-
- awk '{print $5}' path/to/file
-
- - Print the second column of the lines containing "foo" in a space-separated file:
-
- awk '/foo/ {print $2}' path/to/file
-
- - Print the last column of each line in a file, using a comma (instead of space) as a field separator:
-
- awk -F ',' '{print $NF}' path/to/file
-
- - Sum the values in the first column of a file and print the total:
-
- awk '{s+=$1} END {print s}' path/to/file
-
- - Print every third line starting from the first line:
-
- awk 'NR%3==1' path/to/file
-
- - Print different values based on conditions:
-
- awk '{if ($1 == "foo") print "Exact match foo"; else if ($1 ~ "bar") print "Partial match bar"; else print "Baz"}' path/to/file
-
- - Print all lines where the 10th column value equals the specified value:
-
- awk '($10 == value)'
-
- - Print all the lines which the 10th column value is between a min and a max:
-
- awk '($10 >= min_value && $10 <= max_value)'
复制代码
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