12-21-2010
Oh. That is called a "prompt". The shell displays it to indicate that I can type something.
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1. Shell Programming and Scripting
I had posted previously about this problem I had.
I have multiple text files with hundreds of lines of the following type:
2000001 34 54 234 2000001
32 545 2000001 -2000001 77 2000001 44 2000001 998 2000001
77 32 2000001 45 23 111 89
98 75 23 34 999
.
.
.
etc...
What I wanted was... (2 Replies)
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2. UNIX for Dummies Questions & Answers
i'm confused what this means.
i was asked to design a menu or command line option driven script that reads out of a DB and displays info such as
read_data.pl -u <user> -e <event>
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3. Shell Programming and Scripting
so in unix this command works works and shows me a list of directories
find . -name \*.xls -exec dirname {} \; | sort -u | > list.txt
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4. Shell Programming and Scripting
so i have 3 options - i, d, a - for id, date, and arguments
therefore
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5. Shell Programming and Scripting
Hello everyone,
I have a perl script which takes various command line options from user like :
test.pl -i <input_file> -o <output_file> -d <value> -c <value>
Now I have multiple input files in a directory:
<input_file_1>
<input_file_2>
<input_file_3>
<input_file_4>
.....
....
...... (6 Replies)
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i am a beginner, i want to make a program that takes any command line arguments... and print it out in reverse.
ie. if the command line argument is "thanks for helping me"
i want it to output "me helping for thanks" :D
i have tried using the reverse command, but i cant get it working!!
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Hi All,
I am trying to execute the following tar command with two --exclude options to suppress extract of the two directories specified.
Do I need to single quote the directory paths ??
Many thanks for your help.
The relevant code excerpt from the script is:
cd /var/www/${SITE}
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Hi all!
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Hi All,
I have written a menu driven bash shell script.
Current Output is as below:
-------------------------------------
Main Menu
-------------------------------------
Option 1
Option 2
Option 3
Option 4
Exit
=====================================
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I am looking for help in processing of those options: '-n' or '-p'
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LEARN ABOUT OPENDARWIN
su
SU(1) BSD General Commands Manual SU(1)
NAME
su -- substitute user identity
SYNOPSIS
su [-flm] [login] [-c shell arguments]
DESCRIPTION
su requests the password for login and switches to that user and group ID after obtaining proper authentication. A shell is then executed,
and any additional shell arguments after the login name are passed to the shell. If su is executed by root, no password is requested and a
shell with the appropriate user ID is executed.
The options are as follows:
-c Invoke the following command in a subshell as the specified user.
-f If the invoked shell is csh(1), this option prevents it from reading the ``.cshrc'' file.
-l Simulate a full login. The environment is discarded except for HOME, SHELL, PATH, TERM, and USER. HOME and SHELL are modified as
above. USER is set to the target login. PATH is set to ``/bin:/usr/bin''. TERM is imported from your current environment. The
invoked shell is the target login's, and su will change directory to the target login's home directory. This option is identical to
just passing "-", as in "su -".
-m Leave the environment unmodified. The invoked shell is your login shell, and no directory changes are made. As a security precau-
tion, if the target user's shell is a non-standard shell (as defined by getusershell(3)) and the caller's real uid is non-zero, su
will fail.
The -l and -m options are mutually exclusive; the last one specified overrides any previous ones.
Only users in group ``wheel'' (normally gid 0) or group ``admin'' (normally gid 20) can su to ``root''.
By default (unless the prompt is reset by a startup file) the super-user prompt is set to ``#'' to remind one of its awesome power.
SEE ALSO
csh(1), login(1), sh(1), skey(1), kinit(1), kerberos(1), passwd(5), group(5), environ(7)
ENVIRONMENT
Environment variables used by su :
HOME Default home directory of real user ID unless modified as specified above.
PATH Default search path of real user ID unless modified as specified above.
TERM Provides terminal type which may be retained for the substituted user ID.
USER The user ID is always the effective ID (the target user ID) after an su unless the user ID is 0 (root).
HISTORY
A su command appeared in Version 7 AT&T UNIX.
BSD
April 18, 1994 BSD