10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
I'm trying to use awk to count the occurrences of two matching fields of a CSV file.
For instance, for data that looks like this...
Joe,Blue,Yes,No,High
Mike,Blue,Yes,Yes,Low
Joe,Red,No,No,Low
Joe,Red,Yes,Yes,Low
I've been trying to use code like this...
countvar=`awk ' $2~/$color/... (4 Replies)
Discussion started by: nmoore2843
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2. UNIX for Beginners Questions & Answers
I'm a complete beginner in UNIX (and not a computer science student either), just undergoing a tutoring course. Trying to replicate the instructions on my own I directed output of the ls listing command (lists all files of my home directory ) to My_dir.tsv file (see the screenshot) to make use of... (9 Replies)
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3. UNIX for Dummies Questions & Answers
I'm looking for some documentation on what the different fields mean in the output of passwd -S username:
passwd -S foo
foo PS 2012-03-20 0 70 3 -1 (Password set, MD5 crypt.)
I think the date given is the date of the last password change, the 0 after that is the minimum password age, and... (2 Replies)
Discussion started by: Anne Neville
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4. UNIX for Dummies Questions & Answers
Hi!
i want to extract from /etc/passwd file,the user and user info fileds, to a another file.I've tried this:
cut -d ':' -f1 ':' -f6 < file
but cut can be used to extract olny one field and not two.
maybe with awk is this possible? (4 Replies)
Discussion started by: strawhatluffy
4 Replies
5. UNIX for Dummies Questions & Answers
Okay, I've made threads on extracting fields and comparing strings in separate files in .csv's. I've written the following code with intentions of learning more.
I just want this one question answered: How can I assign fields from a file(comma separated) to variables?
My goal is to check... (0 Replies)
Discussion started by: chickeneaterguy
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6. Shell Programming and Scripting
Hi,
I am writing a code where the file is a pipe delimited and I would need to extract the 2nd part of field2 if it is "ATTN", "C/O" or "%" and check to see if field9 is populated or not. If field9 is already populated then leave it as is but if field9 is not populated then take the 2nd part of... (3 Replies)
Discussion started by: msalam65
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7. Shell Programming and Scripting
Hi,
I have data in following format.
10001, John, Daves, Architecture, -2219
10002, Jim, Cirners, Businessman, -2219
1003, Tom, Katch, Engineer, -14003
I want to select the last column of the above given file and paste it on a different file in the following manner.
File TEST column... (11 Replies)
Discussion started by: kam786sim
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8. Shell Programming and Scripting
I'm working on formatting some attendance data to meet a vendors requirements to upload to their system. With some help on the forums here, I have the data close. But they've since changed what they want.
The vendor wants me to submit three fields to them. Field 1 is the studentid field,... (4 Replies)
Discussion started by: axo959
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9. UNIX for Dummies Questions & Answers
Hi,
I am looking for a method to get column13 to column 50 data from the 1st line of a multiline reord. The records are stored in a large file and are separated by newline. sample format is
(data in red is to be extracted)
<header>
A001dfhskhfkdsh hajfhksdhfjh... (3 Replies)
Discussion started by: sunayana3112
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10. Solaris
Describe what the output of the command “cut -d: -f4 /etc/passwd | more” would be? (3 Replies)
Discussion started by: wickbc
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su(1) General Commands Manual su(1)
Name
su - substitute a user ID
Syntax
su [username]
su - [username]
su -f [username]
Description
The command requests the password of the specified username. If the correct password is given, changes to that username without changing
the current directory. The user environment is unchanged except for HOME and SHELL which are taken from the password file entry for user-
name. The shell that is run is also taken from the password file entry for username. The new user ID stays in force until the shell
exits.
If no username is specified, `root' is assumed. To remind the superuser of his responsibilities, the shell substitutes `#' for its usual
prompt.
Options
-f Prevents from executing the .cshrc file, making start up faster.
- Simulates a full login.
Diagnostics
Sorry
An invalid password was supplied for the specified username.
Unknown login: username
The specified username was not found in the passwd database.
No directory
The home directory for the username is not accessible at this time (only with ``-'' argument).
No shell
The shell specified in the passwd database entry for username could not be executed.
Kerberos initialization failure
Consult your system administrator.
If enhanced security features are enabled the following error messages are also possible:
Requires secure terminal
Attempt to su to UID 0 on a line that is not marked secure in
User's password has expired
Access is denied because the password for username is expired.
This account is disabled
Access is denied because the auth entry corresponding to username is marked disabled.
Files
Log file of anyone who became
root, with a date mark.
See Also
csh(1), sh(1), passwd(5yp), environ(7), edauth(8)
Security Guide for Administrators
Security Guide for Users
su(1)