cis045/Lab Number 4 Week 5 at main · UpsideDownTurtle/cis045 · GitHub

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Number 1
[cs45aa15@mc-redhat01 ~]$ cp /tmp/week-5/*  $HOME/homework/week-5
[cs45aa15@mc-redhat01 week-5]$ ls
mnm     names_file  regtxt   regtxt2
months  numbers     regtxt1  tester1

Number 2
[cs45aa15@mc-redhat01 week-5]$ sort months
Apr
Aug
Dec
Feb
Jan
Jul
Jun
Mar
May
Nov
Oct
Sep

Number 3
[cs45aa15@mc-redhat01 week-5]$ touch monbrs
[cs45aa15@mc-redhat01 week-5]$ sort -m months numbers > monbrs
[cs45aa15@mc-redhat01 week-5]$ cat monbrs
10
20
30
40
50
60
70
80
90
100
1
5
15
25
35
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Number 4
[cs45aa15@mc-redhat01 week-5]$ egrep ^[r]{1} /etc/passwd
root:x:0:0:root:/root:/bin/bash
rpc:x:32:32:Rpcbind Daemon:/var/lib/rpcbind:/sbin/nologin
rtkit:x:172:172:RealtimeKit:/proc:/sbin/nologin
radvd:x:75:75:radvd user:/:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin

Number 5
[cs45aa15@mc-redhat01 week-5]$ egrep -c ^[r]{1} /etc/passwd
5

Number 6
[cs45aa15@mc-redhat01 week-5]$ egrep -v 'cs45' /etc/passwd > nocs45
[cs45aa15@mc-redhat01 week-5]$ grep -c 'cs45' nocs45
0

Number 7
[cs45aa15@mc-redhat01 week-5]$ egrep 'y' months
May

Number 8 -
[cs45aa15@mc-redhat01 week-5]$ egrep -c 'root|ly|body|ROOT|LY|BODY' rootlybody
6
[cs45aa15@mc-redhat01 week-5]$ cat rootlybody
root
ly
body
ROOT
LY
AARFFDDG
BODY
FDSF
fdfasfd

Number 9
[cs45aa15@mc-redhat01 week-5]$ cat -TE regtxt
I am line one$
2 I am$
100 is cost of ticket$
  two spaces in begin$
two spaces at end  $
       $
line with 5 spaces above$
jan$
feb$
408-334-9808$
446-35-1088$
aa$
aaaaaAA$
a$
XaaaA $
55555566666$
55555555  $
55$
10.2.3.4$
101.20.5.6$
9.2.3.4$
192.16.2.244$

Number 10
[cs45aa15@mc-redhat01 week-5]$ egrep '[0-9]{3}-[0-9]{3}-[0-9]{4}' regtxt
408-334-9808

Number 11
[cs45aa15@mc-redhat01 week-5]$ grep '^a.*A$' regtxt
aaaaaAA

Number 12
[cs45aa15@mc-redhat01 week-5]$ egrep '[0-9]{3}-[0-9]{2}-[0-9]{4}' regtxt2 > ssn
[cs45aa15@mc-redhat01 week-5]$ sed -ie 's/[0-9]{4}/****/g' ssn
[cs45aa15@mc-redhat01 week-5]$ cat ssn
446-35-****
346-35-****


Number 13
[cs45aa15@mc-redhat01 week-5]$ sed -ie 's/100/(100)/g' regtxt1
[cs45aa15@mc-redhat01 week-5]$ cat regtxt1
I am line one
2 I am
(100) is cost of ticket
  two spaces in begin
two spaces at end

line with 5 spaces above
jan
feb

Number 14
[cs45aa15@mc-redhat01 week-5]$  egrep '[0-9]{3}-[0-9]{3}-[0-9]{4}' regtxt2
408-334-9808
415-934-6808
510-534-9808

Number 15
[cs45aa15@mc-redhat01 week-5]$ rm newnums
[cs45aa15@mc-redhat01 week-5]$  egrep '[0-9]{3}-[0-9]{3}-[0-9]{4}' regtxt2 > newnums
[cs45aa15@mc-redhat01 week-5]$ sed -E 's/([0-9]{3})-([0-9]{3})-([0-9]{4})/\3-\2-\3/' newnums
9808-334-9808
6808-934-6808
9808-534-9808