It's highly dangerous to mess around with system files (e.g. password files) NOT using the tools designed for it. You might end up not being able to access the system.
For the sheer exercise: How is the user identified - by user name (field 1), UID (field 3), or both? And, it's just about field 2, so all the other fields in file 2 will stay the same? Assuming both, why don't you copy the entire line?
Try
I have 2 files - fileA and fileB
I need to match the first field of the 2 files then output some of the fields from fileA on the same line as certain fields from fileB.
There will be instances where fileB does not have a match for first field in fileA
Thanks in advance (8 Replies)
I want to count the number of occurence of perticular word from one text file.
Please tell me "less" command is work in ksh or not. If it is not working then instead of that which command will work. :confused: (40 Replies)
Hi,
We need to configure some of the fileds in bugzilla like Platform,OS, Version etc are mandatory. Is it possible to set, if yes then how to configure.
Thanks & Regards,
Bache (0 Replies)
Hi all,
I am new to UNIX, so sorry if my question seem stupid to u.
well i want to replace the first character of first 30 lines of a file, only if the first character is h.
and
in anothe script i want to replace a particular string/character say hello/h of a file.Condition: It should... (1 Reply)
Hi Friends,
Please help me in finding the solution for this :
I have a file as below :
CuDv:
name = "hdisk0"
status = 1
chgstatus = 2
ddins = "scsidisk"
location = ""
parent = "vscsi0"
connwhere = "830000000000"
PdDvLn... (3 Replies)
Dear All,
I need a unix script that will read the 7th line and especially these fileds from a file Mo speed 16, Mt speed 15 every 15 minutes starting from 00:00 to 23:45 on daily basis and put the result in a txt file and name it MT_MO_20090225.txt, please also note that the system date format... (2 Replies)
I have following text:
NAME=ora.LISTENER.lsnr
TYPE=ora.listener.type
TARGET=ONLINE , ONLINE , ONLINE , ONLINE
STATE=ONLINE on host1, ONLINE on host2, ONLINE on host3, ONLINE on host4
NAME=ora.LISTENER_1525.lsnr
TYPE=ora.listener.type
TARGET=ONLINE ... (2 Replies)
Dear All
I have a text file which has many columns (>10,000). I want to create a new text file which will NOT include following columns: 5,15,105,200. How can I do that in shell (or awk, perl)? Thanks. (6 Replies)
How to list todays file in perticular folder
Moved thread to appropriate forum (9 Replies)
Discussion started by: pspriyanka
9 Replies
LEARN ABOUT DEBIAN
combine
COMBINE(1)COMBINE(1)NAME
combine - combine sets of lines from two files using boolean operations
SYNOPSIS
combine file1 and file2
combine file1 not file2
combine file1 or file2
combine file1 xor file2
_ file1 and file2 _
_ file1 not file2 _
_ file1 or file2 _
_ file1 xor file2 _
DESCRIPTION
combine combines the lines in two files. Depending on the boolean operation specified, the contents will be combined in different ways:
and Outputs lines that are in file1 if they are also present in file2.
not Outputs lines that are in file1 but not in file2.
or Outputs lines that are in file1 or file2.
xor Outputs lines that are in either file1 or file2, but not in both files.
"-" can be specified for either file to read stdin for that file.
The input files need not be sorted, and the lines are output in the order they occur in file1 (followed by the order they occur in file2
for the two "or" operations). Bear in mind that this means that the operations are not commutative; "a and b" will not necessarily be the
same as "b and a". To obtain commutative behavior sort and uniq the result.
Note that this program can be installed as "_" to allow for the syntactic sugar shown in the latter half of the synopsis (similar to the
test/[ command). It is not currently installed as "_" by default, but you can alias it to that if you like.
SEE ALSO join(1)AUTHOR
Copyright 2006 by Joey Hess <joey@kitenet.net>
Licensed under the GNU GPL.
moreutils 2012-04-09 COMBINE(1)