Interview
UNIX COMMANDS INTERVIEW QUESTIONS
UNIX COMMANDS
1.SEARCH A FILE FROM ROOT DIRECTORY.(FILENAME = SAMPLE.TXT)
FIND / -NAME SAMPLE.TXT
2.DISPLAY THE NUMBERS IN SORTED ORDER
SORT -NU
3.DISPLAY THE UPDATED LINES IN FILE
TAIL -F FILENAME
4.HOW TO ZIP A DIRECTORY
GZIP -R /HOM/BEA/APP
5.HOW TO KILL A PROSESS.
KILL -9 PID
6.DISPLAY ALL JAVA PROCESS IN UNIX.
PS -EF |GREP JAVA
7.HOW TO DELETE 10 LINES IN VI EDITOR.
10DD
8.HOW TO SEARCH A STRING AND REPLACE TIN VI EDITOR.
:"%S/OLD STRING /NEW STRING/ GI"
9.HOW TO SEARCH A STRING IN VI EDITOR FROM BOTTOM TO TOP.
?STRING NAME
10.HOW TO INSERT A LINE ABOVE THE CURRENT LINE IN VI EDITOR .
ESC+O
11.HOW TO RENAME A FILE .
MV FILE1 FILE2
12. COPY THE CONTENT ONE DIRECTORY TO ANOTHER DIRECTORY.
CP -R DIR1/FILE1 DIR2/FILE2
13. HOW CAN DELETE BLANK LINES IN DIRECTORY.
GREP -V "^$" SAMPLE > TEMP
MV TEMP SAMPLE
14.HOW CAN REPLACE ASTRING IN UNIX.
SED "S/OLDSTRING/NEWSTRING/G" FILENAME
15.SYNTAX FOR ZIP AND UNZIP AFILE.
GZIP FILENAME
GUZIP FILENAME.GZ
16.HOW CAN DISPLAY TOP 10 DISK USAGE FILES.
DU -SH *|SORT -NR|HEAD -10
17.HOW TO RETRIVE A FIELD IN A FILE.
CUT -F 1,2 STUD.
18.WHAT IS COMMAND SEARCH A STRING IN A FILE.
GREP
19).HOW TO GOTO THE END OF THE LINE IN VIEDITOR?
G
20).COPY 10 LINE IN VI EDITOR?
10YY
21).HOW TO GO TO INSERT MODE IN VI EDITOR?
ESC+I
22).HOW TO SEARCH A STRING IN A FILE(FILENAME=SAMPLE,STRING=WEBLOGIC)?
GREP WEBLOGIC SAMPLE
23).HOW TO COPYFILE FROM ONE UNIX TO OTHER UNIX SYSTEM AND SYNTAX (FILE=SAMPLE.TXT,TARGET HOST=192.168.11.128,TARGET FILE PATH=/HOME/BEA)?
SCP -RP SAMPLE.TXT USERNAME@192.168.11.128:/HOME/BEA
24).COPY FILE FROM PATH TO OTHER TREE STRUCTURE IS GIVEN BELOW?
25).HOW TO FIND OUT CPU UTILIGATION?
TOP
26).HOW TO EXECUTE ASCRIPT USING NOHUP(SCRIPT NAME=STARTWEBLOGIC.SH)?
NOHUP ./STARTWEBLOGIC.SH &
27).WHICH COMMAND IS USED TO SEARCH AND REPLACE A STRING?
SED
28).WICH COMMAND IS USED TO SEARCH ASTRING IN MULTIPLE FILES?
FGREP
FIND / -NAME SAMPLE.TXT
2.DISPLAY THE NUMBERS IN SORTED ORDER
SORT -NU
3.DISPLAY THE UPDATED LINES IN FILE
TAIL -F FILENAME
4.HOW TO ZIP A DIRECTORY
GZIP -R /HOM/BEA/APP
5.HOW TO KILL A PROSESS.
KILL -9 PID
6.DISPLAY ALL JAVA PROCESS IN UNIX.
PS -EF |GREP JAVA
7.HOW TO DELETE 10 LINES IN VI EDITOR.
10DD
8.HOW TO SEARCH A STRING AND REPLACE TIN VI EDITOR.
:"%S/OLD STRING /NEW STRING/ GI"
9.HOW TO SEARCH A STRING IN VI EDITOR FROM BOTTOM TO TOP.
?STRING NAME
10.HOW TO INSERT A LINE ABOVE THE CURRENT LINE IN VI EDITOR .
ESC+O
11.HOW TO RENAME A FILE .
MV FILE1 FILE2
12. COPY THE CONTENT ONE DIRECTORY TO ANOTHER DIRECTORY.
CP -R DIR1/FILE1 DIR2/FILE2
13. HOW CAN DELETE BLANK LINES IN DIRECTORY.
GREP -V "^$" SAMPLE > TEMP
MV TEMP SAMPLE
14.HOW CAN REPLACE ASTRING IN UNIX.
SED "S/OLDSTRING/NEWSTRING/G" FILENAME
15.SYNTAX FOR ZIP AND UNZIP AFILE.
GZIP FILENAME
GUZIP FILENAME.GZ
16.HOW CAN DISPLAY TOP 10 DISK USAGE FILES.
DU -SH *|SORT -NR|HEAD -10
17.HOW TO RETRIVE A FIELD IN A FILE.
CUT -F 1,2 STUD.
18.WHAT IS COMMAND SEARCH A STRING IN A FILE.
GREP
19).HOW TO GOTO THE END OF THE LINE IN VIEDITOR?
G
20).COPY 10 LINE IN VI EDITOR?
10YY
21).HOW TO GO TO INSERT MODE IN VI EDITOR?
ESC+I
22).HOW TO SEARCH A STRING IN A FILE(FILENAME=SAMPLE,STRING=WEBLOGIC)?
GREP WEBLOGIC SAMPLE
23).HOW TO COPYFILE FROM ONE UNIX TO OTHER UNIX SYSTEM AND SYNTAX (FILE=SAMPLE.TXT,TARGET HOST=192.168.11.128,TARGET FILE PATH=/HOME/BEA)?
SCP -RP SAMPLE.TXT USERNAME@192.168.11.128:/HOME/BEA
24).COPY FILE FROM PATH TO OTHER TREE STRUCTURE IS GIVEN BELOW?
25).HOW TO FIND OUT CPU UTILIGATION?
TOP
26).HOW TO EXECUTE ASCRIPT USING NOHUP(SCRIPT NAME=STARTWEBLOGIC.SH)?
NOHUP ./STARTWEBLOGIC.SH &
27).WHICH COMMAND IS USED TO SEARCH AND REPLACE A STRING?
SED
28).WICH COMMAND IS USED TO SEARCH ASTRING IN MULTIPLE FILES?
FGREP
1)HOW TO SEARCH A STRING FROM TOP TO BOTTOM IN VI EDITOR'S(STRING =WEBLOGIC)?
A) /WEBLOGIC
2)HOW TO SAVE AND QUIT FROM VI EDITOR'S?
A)WQ!
3)WHAT ARE THE ADVANTAGES OF NOHUP COMMAND?
A)NOHUP WILL EXECUTE THE PROCESS IF YOU LAYOUT SYSTEM.
SYN:NOHUP &.
4)DIFFERANCE B/W THE PING AND TRACERT?
A) PING TRACERT
1)IT IS CHECK THE CONNECTIVITY. 1.IT IS PACKET INFORMATION ONE PLACE TO
ANOTHER PLACE DESTINATION.
2)IT IS DISPLAY ALL AT A TIME. 2.IT DISPLAY ONLY 30 HUBS IN TRACERT.
5)HOW TO EXECUTE UNIX COMMANDS IN VI?
A):LS
6)TAR DIR1 DIR2 DIR3 AND NEW_DIR?
A)SYN:TAR -CVF NEW_DIR.TAR DIR1 DIR2 DIR3.
7)HOW TO DISPLAY THE IPADDRESS AND PORTNUMBER?
A)NETSTAT -ANP
8)HOW TO DELETE DIRECTORY WITH RECURSION AND FORCE?
A)RM -RF FILENAME.
9)HOW TO OPEN A FILE WITH PAGE TO PAGE ?
A)MORE FILENAME
10)HOW TO HIDE A FILE (FILE NAME=TUXEDO)?
A)MV TUXEDO .TUXEDO
11)HOW TO DO UNDO IN VI EDITOR'S?
A)U
12)HOW TO GOTO 100 LINE IN VI EDITOR'S?
A)100L
13)HOW TO DISPLAY LAST 100 LINE FROM A FILE?
A)TAIL -100 FILENAME
14)HOW TO RETERIVE THE FIELDS FROM A FILE?
A)CUT
15)HOW TO ZIP A DIRECTORY?(/HOME/DIRECTORY)?
A)GZIP -R /HOME/DIRECTORY
16)HOW TO GO TO END OF THE LINE IN VI?
A)G
17)DISPLAY THE DIRECTIORY COUNT IN CURRENT DIR?
A)LS -LRT !WC -L
18)HOW TO DISPLAY ALL FILES ENDING WITH "LOG"?
19)HOW TO APPEAND DATA TO THE EXISTING FILE?
A)CAT>>FILENAME
20)HOW TO FIND OUT THE DISKSPACE OF THE FILESYSTEM?
A)DF -SH
21)WRITE A SYNTAX FOR THE SCP COMMANDS?
A) SCP FILENAME ROOT@IPADDRESS:FILENAME.
22)HOW TO DISPLAY THE UPDATED LINES IN FILE ?
A)TAIL -F FILENAME.
23)HOW TO DISPLAY THE IPADDRESS AND PORTNUMBER?
A)NETSTAT -ANP
24)WHICH COMMAND IS USED TO CONNECT TO THE REMOTE SERVER?
A)TELENET IPADDRESS.
25)HOW TO REPALCE AND STRING IN VI EDITOR'S?
A) SED %S/OLDSTRING/NEWSTRING/G
25)HOW TO REPALCE AND STRING IN UNIX?
A) SED S/OLDSTRING/NEWSTRING/G FILENAME
26)HOW TO DISPLAY TOP 10 LINES FROM A FILE?
A) HEAD -10 FILENAME.
27)SYNTAX FOR TAR AND UNTAR A FILE?
A)TAR -CVF FILENAME.TAR FILE1 FILE2 FILE3.
TAR -XVF FILENAME.TAR
28)HOW TO DISPLAY HIDDEAN A FILE?
A)LS -A. 29)HOW TO DELETE A BLANK LINE FROM A FILENAME?
A)GREP "^V" SAMPLE >TEMP
MV TEMP FILENAME
30)HOW TO DISPLAY ALL CUURENT RUNNING PROCESS?
A)PS -EF
31)SYNTAX FOR ZIP AND UNZIP FILE?
A)GZIP FILENAME.
GUNZIP FILENAME.GZ
A) /WEBLOGIC
2)HOW TO SAVE AND QUIT FROM VI EDITOR'S?
A)WQ!
3)WHAT ARE THE ADVANTAGES OF NOHUP COMMAND?
A)NOHUP WILL EXECUTE THE PROCESS IF YOU LAYOUT SYSTEM.
SYN:NOHUP &.
4)DIFFERANCE B/W THE PING AND TRACERT?
A) PING TRACERT
1)IT IS CHECK THE CONNECTIVITY. 1.IT IS PACKET INFORMATION ONE PLACE TO
ANOTHER PLACE DESTINATION.
2)IT IS DISPLAY ALL AT A TIME. 2.IT DISPLAY ONLY 30 HUBS IN TRACERT.
5)HOW TO EXECUTE UNIX COMMANDS IN VI?
A):LS
6)TAR DIR1 DIR2 DIR3 AND NEW_DIR?
A)SYN:TAR -CVF NEW_DIR.TAR DIR1 DIR2 DIR3.
7)HOW TO DISPLAY THE IPADDRESS AND PORTNUMBER?
A)NETSTAT -ANP
8)HOW TO DELETE DIRECTORY WITH RECURSION AND FORCE?
A)RM -RF FILENAME.
9)HOW TO OPEN A FILE WITH PAGE TO PAGE ?
A)MORE FILENAME
10)HOW TO HIDE A FILE (FILE NAME=TUXEDO)?
A)MV TUXEDO .TUXEDO
11)HOW TO DO UNDO IN VI EDITOR'S?
A)U
12)HOW TO GOTO 100 LINE IN VI EDITOR'S?
A)100L
13)HOW TO DISPLAY LAST 100 LINE FROM A FILE?
A)TAIL -100 FILENAME
14)HOW TO RETERIVE THE FIELDS FROM A FILE?
A)CUT
15)HOW TO ZIP A DIRECTORY?(/HOME/DIRECTORY)?
A)GZIP -R /HOME/DIRECTORY
16)HOW TO GO TO END OF THE LINE IN VI?
A)G
17)DISPLAY THE DIRECTIORY COUNT IN CURRENT DIR?
A)LS -LRT !WC -L
18)HOW TO DISPLAY ALL FILES ENDING WITH "LOG"?
19)HOW TO APPEAND DATA TO THE EXISTING FILE?
A)CAT>>FILENAME
20)HOW TO FIND OUT THE DISKSPACE OF THE FILESYSTEM?
A)DF -SH
21)WRITE A SYNTAX FOR THE SCP COMMANDS?
A) SCP FILENAME ROOT@IPADDRESS:FILENAME.
22)HOW TO DISPLAY THE UPDATED LINES IN FILE ?
A)TAIL -F FILENAME.
23)HOW TO DISPLAY THE IPADDRESS AND PORTNUMBER?
A)NETSTAT -ANP
24)WHICH COMMAND IS USED TO CONNECT TO THE REMOTE SERVER?
A)TELENET IPADDRESS.
25)HOW TO REPALCE AND STRING IN VI EDITOR'S?
A) SED %S/OLDSTRING/NEWSTRING/G
25)HOW TO REPALCE AND STRING IN UNIX?
A) SED S/OLDSTRING/NEWSTRING/G FILENAME
26)HOW TO DISPLAY TOP 10 LINES FROM A FILE?
A) HEAD -10 FILENAME.
27)SYNTAX FOR TAR AND UNTAR A FILE?
A)TAR -CVF FILENAME.TAR FILE1 FILE2 FILE3.
TAR -XVF FILENAME.TAR
28)HOW TO DISPLAY HIDDEAN A FILE?
A)LS -A. 29)HOW TO DELETE A BLANK LINE FROM A FILENAME?
A)GREP "^V" SAMPLE >TEMP
MV TEMP FILENAME
30)HOW TO DISPLAY ALL CUURENT RUNNING PROCESS?
A)PS -EF
31)SYNTAX FOR ZIP AND UNZIP FILE?
A)GZIP FILENAME.
GUNZIP FILENAME.GZ
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