I need to grep for a pattern in a file. Files are huge and have several repeated occurances of the strings which match pattern. I just need the strings which contain the pattern in the output.
For eg.
The contents of my file are as follows. The pattern I want to match by is ABCD
... (5 Replies)
Hi all,
I've searched the forum and I can find some code to sort uniquely in perl but not by a single field.
I have a file with data such as the following:
1,test,34
1,test2,65
2,test,35,
1,test3,34
2,test,34
What i want to do is sort it uniqely by the first field only so I'd end... (2 Replies)
Shell script help
Here is 3 sample lines from a log file
<date> INFO <java.com.blah> abcd:ID= user login
<date> DEBUG <java.com.blah> <nlah bla> abcd:ID=123 user login
<date> INFO <java.com.blah> abcd:ID=3243 user login
I want to find unique "ID" from this log... (3 Replies)
Hi Guys,
I have two files that I am using:
File1 is as follows:
wwe
khfgv
jfo
jhgfd
hoaha
hao
lkahe
This is like a master file which has entries in the order which I want. (4 Replies)
I have this input file
tilenet_test:clar_r5_performance:server_2:4.80762:0%:APM00083103999-009E,APM00083103999-009F
tilenet_int:clar_r5_performance:server_2:4.80762:0%:APM00083103999-00C4... (3 Replies)
Hi,
I have a hash with unique keys associated with some data.
my %FINALcontigs = (
'mira_rep_c765:119reads**', 'ctctactggaagactgac',
'mira_rep_c7454:54reads**', 'atggatactgcgctgttgctaactactgga',
'mira_rep_c6803:12reads**', 'atcgactggatgcagggttgtggtttcta',
... (2 Replies)
Hallo Everyone.
I have to admit I'm shell scripting illiterate . I need to find certain strings in several text files and replace each of the string by unique & corresponding text.
I prepared a csv file with 3 columns: <filename>;<old_pattern>;<new_pattern>
... (5 Replies)
I am trying to use awk to print the unique entries in $2
So in the example below there are 3 lines but 2 of the lines match in $2 so only one is used in the output.
File.txt
chr17:29667512-29667673 NF1:exon.1;NF1:exon.2;NF1:exon.38;NF1:exon.4;NF1:exon.46;NF1:exon.47 703.807... (5 Replies)
When I use the below awk to count the unique lines in $4 for the input it seems to work. The answer is 3 because $4 is only unique 3 times in all the entries. However, when I use the same on actual data I get 56,536 and I know the answer should be 56,548. My question is there a better way to... (8 Replies)
Discussion started by: cmccabe
8 Replies
LEARN ABOUT OSX
master.passwd
PASSWD(5) BSD File Formats Manual PASSWD(5)NAME
passwd, master.passwd -- format of the password file
DESCRIPTION
The /etc/passwd file is a legacy BSD 4.3 format file. It is mostly unused, but is updated by some utility programs. Its format is similar
to the /etc/master.passwd file, except that it does not contain the class, change, and expire fields described below.
The /etc/master.passwd file comprises newline separated records, one per user. Each line contains ten colon (``:'') separated fields. These
fields are as follows:
name User's login name.
password User's encrypted password.
uid User's id.
gid User's login group id.
class User's general classification (unused).
change Password change time.
expire Account expiration time.
gecos User's full name.
home_dir User's home directory.
shell User's login shell.
The name field is the login used to access the computer account, and the uid field is the number associated with it. They should both be
unique across the system (and often across a group of systems) since they control file access.
While it is possible to have multiple entries with identical login names and/or identical user id's, it is usually a mistake to do so. Rou-
tines that manipulate these files will often return only one of the multiple entries, and that one by random selection.
The login name must never begin with a hyphen (``-''); also, it is strongly suggested that neither upper-case characters or dots (``.'') be
part of the name, as this tends to confuse mailers. No field may contain a colon (``:'') as this has been used historically to separate the
fields in the user database.
The password field is the encrypted form of the password. If the password field is empty, no password will be required to gain access to the
machine. This is almost invariably a mistake. Because these files contain the encrypted user passwords, they should not be readable by any-
one without appropriate privileges.
The group field is the group that the user will be placed in upon login. Since this system supports multiple groups (see groups(1)) this
field currently has little special meaning.
The class field is currently unused.
The change field is the number in seconds, GMT, from the epoch, until the password for the account must be changed. This field may be left
empty to turn off the password aging feature.
The expire field is the number in seconds, GMT, from the epoch, until the account expires. This field may be left empty to turn off the
account aging feature.
The gecos field normally contains the user's full name. Note that Mac OS X differs from some other operating systems, where the gecos field
may contain other comma-separcted information about the user.
The home_dir field is the user's home directory. This is the full path name where the user will be placed on login.
The shell field is the command interpreter the user prefers. If there is nothing in the shell field, the Bourne shell (/bin/sh) is assumed.
INTERACTION WITH DIRECTORY SERVICES
Processes generally find user records using one of the getpwent(3) family of functions. On Mac OS X, these functions interact with the
DirectoryService(8) daemon, which reads the /etc/master.passwd file as well as searching other directory information services to find user
accounts.
FILES
/etc/passwd
/etc/master.passwd
SEE ALSO chpass(1), login(1), passwd(1), getpwent(3), netgroup(5), DirectoryService(8), pwd_mkdb(8), vipw(8)HISTORY
A passwd file format appeared in Version 6 AT&T UNIX.
BSD July 18, 1995 BSD