shell脚本学习每日一句（2）

5月21号 晚上8点更新

employee文件中记录了工号和姓名

employee.txt:
100 Jason Smith
200 John Doe
300 Sanjay Gupta
400 Ashok Sharma
bonus文件中记录工号和工资
bonus.txt:
100 $5,000
200 $500
300 $3,000
400 $1,250
要求把两个文件合并并输出如下
处理结果:
400 ashok sharma $1,250
100 jason smith $5,000
200 john doe $500

300 sanjay gupta $3,000

[root@fsailing1 shell]# vim employee.txt
[root@fsailing1 shell]# vim bonus.txt
[root@fsailing1 shell]# paste employee.txt bonus.txt
100 Jason Smith         100 $5,000
200 John Doe    200 $500
300 Sanjay Gupta        300 $3,000
400 Ashok Sharma        400 $1,250
[root@fsailing1 shell]# paste employee.txt bonus.txt |awk '{print $1 $2 $3 $ 5}'
100JasonSmith$5,000
200JohnDoe$500
300SanjayGupta$3,000
400AshokSharma$1,250

[root@fsailing1 shell]# paste employee.txt bonus.txt |awk '{print $1,$2,$3,$5}' 
100 Jason Smith $5,000
200 John Doe $500
300 Sanjay Gupta $3,000
400 Ashok Sharma $1,250

[root@fsailing1 shell]# paste employee.txt bonus.txt |awk '{print $1 , $2 , $3 , $5}'|tr '[:lower:]' '[:upper:]'
100 JASON SMITH $5,000
200 JOHN DOE $500
300 SANJAY GUPTA $3,000
400 ASHOK SHARMA $1,250
[root@fsailing1 shell]# paste employee.txt bonus.txt |awk '{print $1 , $2 , $3 , $5}'|tr '[:upper:]' '[:lower:]'|sort -k 2
400 ashok sharma $1,250
100 jason smith $5,000
200 john doe $500
300 sanjay gupta $3,000

5月22号 下午2点

文件格式如下：

100
a 100
b -50
c -20
d -30
要求输出结果为：
100
a 100
200
b -50
150
c -20
130
d -30

100

[root@fsailing1 shell]# awk '{print $0;print $1}' test.txt
100
100
a 100
a
b -50
b
c -20
c
d -30
d
[root@fsailing1 shell]# awk 'NR==1{sum=$1;print $0}' test.txt NR表示awk读到的文件行数。
100
[root@fsailing1 shell]# awk 'NR==1{sum=$1;print $0} NR!=1{print $0;print sum+=$2}' test.txt
100
a 100
200
b -50
150
c -20
130
d -30
100