I have a file wich has several fields separated by space. I want to remove all the fields which are not the client_name.
I mean the field which are not "pfizer","csx" and "mafoi". And the deletion action will be taken place from the 3rd field(including the third field).
Hi,
Just consider there are around 10 lines in a file. Now is it possible to delete the first 2 lines in the file without opening the file. No matter whatever the content of the file is, I just wanna delete the first 2 lines without opening the file. Is that possible? If so, please help me out.... (3 Replies)
Hi,
I need to create recursive tar archive, while I put there only files of type a*.txt.
Without file filtering the command is: tar cfzf test.tar.gz test_tar/
How I include the switch for including only files with pattern a*.txt ?
Thanks a lot! (1 Reply)
Is it possible to make the search in regular exprecion or in matching parts of sed, nawk and others to IGNORE the case of the search string?
I mean, like if used 'grep' with -i option:
> grep -i "abc" file
I would like to be able to do the same, say, by nawk:
> nawk '/abc/ {print $0}'... (4 Replies)
I have a script which I use to archive log files and I want to install it on another server. I match any file with a ".log" in the name. Most files end with ".log" or ".log.nnnn". Of course someone has a file on this server that they do not want to archive that has .login.ear in the file name and... (1 Reply)
Hello ,
I have comma delimited file with over 20 fileds that i need to do some validations on. I have to check if certain fields are null and then write the line containing the null field into a new file and then delete the line from the current file.
Can someone tell me how i could go... (2 Replies)
I need a way to remove all the file names with they are extension from a line of a document. For example:
I have doc named "gara" with the following content:
/media/gogo/6651-FEAB/Desktop/Desktop.jpg
/media/gogo/6651-FEAB/Desktop.pdf
/media/gogo/6651-FEAB/linux/logo1.jpg... (4 Replies)
Hi
I have a file:
r58778.3|SOURCES={KEY=f665931a...,fw,221-705}|ERRORS={16_1:T,30_1:T,56_1:C,57_1:T,59_1:A,101_1:A,115:-,158_1:C,186_1:A,204:-,271_1:T,305:-,350_1:C,368_1:G,442_1:C,472_1:G,477_1:A}|SOURCE_1="Contig_1092402550638"(f665931a359e36cea0976db191ff60ff09cc816e)
I want to retain... (15 Replies)
When I try with patern matching in a file with below code works
cat scj_drive_commands | egrep '/app/oracle/build_lib/pkg32|/app/oracle/build_lib/pkg33'
But when I have code with patern searching using of below does not work !
cat scj_drive_commands | egrep... (3 Replies)
Request: grep to find given matching patern and return unique values, eliminate the duplicate values
I have to retrieve the unique folder on the below file contents like;
/app/oracle/build_lib/pkg320.0_20120927
/app/oracle/build_lib/pkg320.0_20121004_prof... (5 Replies)
Hello,
I have in my backup folder, files with names convention like this :
randomFileNames_13-02-2014_23h13m09+1392333189
randomFileNames_14-02-2014_02h13m09+1392343989
randomFileNames_14-02-2014_04h13m09+1392351189
etc....
Base on timestamp at end of the filename, I would to delete all the... (7 Replies)
Discussion started by: thuyetti
7 Replies
LEARN ABOUT MOJAVE
group
GROUP(5) BSD File Formats Manual GROUP(5)NAME
group -- format of the group permissions file
DESCRIPTION
The file </etc/group> consists of newline separated ASCII records, one per group, containing four colon ':' separated fields. These fields
are as follows:
group Name of the group.
passwd Group's encrypted password.
gid The group's decimal ID.
member Group members.
The group field is the group name used for granting file access to users who are members of the group. The gid field is the number associ-
ated with the group name. They should both be unique across the system (and often across a group of systems) since they control file access.
The passwd field is an optional encrypted password. This field is rarely used and an asterisk is normally placed in it rather than leaving
it blank. The member field contains the names of users granted the privileges of group. The member names are separated by commas without
spaces or newlines. A user is automatically in a group if that group was specified in their /etc/passwd entry and does not need to be added
to that group in the /etc/group file.
INTERACTION WITH DIRECTORY SERVICES
Processes generally find group records using one of the getgrent(3) family of functions. On Mac OS X, these functions interact with the
DirectoryService(8) daemon, which reads the /etc/group file as well as searching other directory information services to determine groups and
group membership.
FILES
/etc/group
SEE ALSO passwd(1), setgroups(2), crypt(3), getgrent(3), initgroups(3), passwd(5), DirectoryService(8)BUGS
The passwd(1) command does not change the group passwords.
HISTORY
A group file format appeared in Version 6 AT&T UNIX.
Mac OS X July 18, 1995 Mac OS X