[mbarsky@src-code]$ script session3

[mbarsky@src-code ~]$ cd w1


#=====================================
# 1. bring input files from url
#=====================================
[mbarsky@src-code w1]$ wget http://hope.simons-rock.edu/~mbarsky/c2018/lectures/linux/A

--2018-01-28 13:30:02--	 http://hope.simons-rock.edu/~mbarsky/c2018/lectures/linux/A

Resolving hope.simons-rock.edu (hope.simons-rock.edu)... 192.168.1.17

Connecting to hope.simons-rock.edu (hope.simons-rock.edu)|192.168.1.17|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: 11

Saving to: ‘A’



100%[======================================>] 11	  --.-K/s   in 0s



2018-01-28 13:30:02 (2.45 MB/s) - ‘A’ saved [11/11]


#------------------------------
# check that the file is in correct format
#-----------------------------------

[mbarsky@src-code w1]$ file A

A: ASCII text

linux/By@src-code w1]$ wget http://hope.simons-rock.edu/~mbarsky/c2018/lectures/linux/B

--2018-01-28 13:30:32--	 http://hope.simons-rock.edu/~mbarsky/c2018/lectures/linux/B

Resolving hope.simons-rock.edu (hope.simons-rock.edu)... 192.168.1.17

Connecting to hope.simons-rock.edu (hope.simons-rock.edu)|192.168.1.17|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: 11

Saving to: ‘B’



100%[======================================>] 11	  --.-K/s   in 0s



2018-01-28 13:30:32 (2.20 MB/s) - ‘B’ saved [11/11]



[mbarsky@src-code w1]$ file B

B: ASCII text

#=======================================
# 2. In-class exercise
#=======================================

[mbarsky@src-code w1]$ cat A

31

5

11

2

4[mbarsky@src-code w1]$ cat B

11

1

12

3

[mbarsky@src-code w1]$ grep 1 A


[mbarsky@src-code w1]$ grep -w 1 A

[mbarsky@src-code w1]$ grep -w 1 B

[mbarsky@src-code w1]$ grep -w 1 B | wc -l

1

[mbarsky@src-code w1]$ sort -n A | head -1

2


[mbarsky@src-code w1]$ sort -n B| head -1

1

[mbarsky@src-code w1]$ sort -n A | tail -1

31

[mbarsky@src-code w1]$ sort -n B | tail -1

12



[mbarsky@src-code w1]$ cat A B | sort -n | uniq

1

2

3

5

11

12

31

411

[mbarsky@src-code w1]$ comm -12 <(sort -n A) <(sort -n B)

2

comm: file 2 is not in sorted order

comm: file 1 is not in sorted order

11

2

[mbarsky@src-code w1]$ comm -12 <(sort A) <(sort B) | sort -n

2

11

[mbarsky@src-code w1]$ exit

exit

#========================================================================================
# NOW remove unreadable characters and convert to the format to read on your operating system
#==========================================================================================

[mbarsky@src-code ~]$ col -bp < session1 > session1.txt
[mbarsky@src-code ~]$ unix2dos session1.txt