shell命令sort

Sort passwd file by 3rd field.

$ sort -t: -k 3n /etc/passwd | more

testdeMacBook-Air:~ test$ cat 1
one:2:3
two:2:1
three:3:2
testdeMacBook-Air:~ test$ sort -t: -k 3rn 1
one:2:3
three:3:2
two:2:1
testdeMacBook-Air:~ test$ sort -t: -k 3n 1
two:2:1
three:3:2
one:2:3
testdeMacBook-Air:~ test$

按数字进行排序

sort -n file.txt

按逆序进行排序

sort -r file.txt

cat data.txt

1 mac 2000

2 winxp 4000

3 bsd 1000

4 linux 1000

依据第1列，以逆序形式排序

sort -nrk 1 data.txt

4 linux 1000

3 bsd 1000

2 winxp 4000

1 mac 2000

-nr表明按照数字，采用逆序形式排序

依据第2列进行排序

sort -k 2 data.txt

3 bsd 1000

4 linux 1000

1 mac 2000

2 winxp 4000