01-06-2009
Bash uses the readline library for line input handling. Other shells might use different methods (ksh, for example, can be configured to behave like vi, using hjkl instead of the arrow keys)
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1. Shell Programming and Scripting
My script needs to read a variable from the user. But before the user types the input, I want to give a default value so the user can edit the default value for input.
How can I implement it?
My script is something like:
#!/bin/sh
read -p 'Port number: ' -e port_number
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2. Shell Programming and Scripting
Hi,
Can some one tell me if we can configure the jobs in crontab using a shell script.
I know it can be done easily by using "crontab -e", but i just want to know whether we can add a job into the crontab using a shell script.
If it can be done, plz suggest the procedure to do it.
If it... (6 Replies)
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3. UNIX Desktop Questions & Answers
Hello
There is a > prompt at Grub, # prompt for the console and $ for bash, but I am clueless about when and how to get into a specific prompt, how to move around between one prompt to another and how to exit.
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4. Shell Programming and Scripting
Hello,
I have a big file in wich I would like to rename inside this exactly the string '_ME' and not rename in case we have 'ABC_MELANGE'. Is there a way to do it by using a shell script?
Any tip will be apreciated.
The file is like described bellow, after using command more filename :
... (3 Replies)
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5. Shell Programming and Scripting
I' trying to use bash to edit a csv file from this format:
"apples","oranges","grapes"
"bread","butter","milk"
To this:
"apples
oranges
grapes"
So that if I would open the csv file in open office,
"apples
oranges
grapes"
Would be in one single cell, and
"bread (2 Replies)
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6. Shell Programming and Scripting
i have a file called number which contains data as
1 2 3 4 5
6 7 8 9 0
9 8 7 6 5
4 3 2 1 0
0 1 2 3 4
needed a shell script to print the output as
1
7
7
1
4
and (2 Replies)
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7. Shell Programming and Scripting
so assume I have a dozen files in local directory and half of them are .txt and I only want to scan these text files and go inside each of them and replace absolute paths (e.g. C:\blabla\more blahblah\myfile.txt) with just the name of that file (myfile.txt) and then go to next line and look if... (6 Replies)
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8. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
I am trying to automate hadoop installation procedure using shell script. It involves go to perticular directory... (3 Replies)
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9. Shell Programming and Scripting
I'm working on a script to execute a number of items. One being, editing particular files to add certain lines. I'm attempting to utilize sed, but, having issues when running from a bash script. Assistance is greatly appreciated.
My example:
sed -i '14 i\
# add these lines
add these lines to... (5 Replies)
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10. Shell Programming and Scripting
Hello Folks,
I have a file named as date.dat present at /tmp/abc location which has following data -
20161030,20161031,20161101
I need to remove this line and replace it with something like below -
$param1,$param2,$param3
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LEARN ABOUT OPENSOLARIS
shells
shells(4) File Formats shells(4)
NAME
shells - shell database
SYNOPSIS
/etc/shells
DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.
A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines
which search the file. Blank lines are also ignored.
The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh,
/bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh,
/usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list.
Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1).
FILES
/etc/shells list of shells on system
SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)
SunOS 5.11 20 Nov 2007 shells(4)