06-07-2005
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hi,
am a new learner to shell programming.
i have a script which will prompt for user to key in their name & display their name afterwards.
script
=====
echo "Pls enter your name:"
read name
echo "Your name is $name."
output
=====
Pls enter your name:
Bob
Your name is Bob.
what... (2 Replies)
Discussion started by: newbie168
2 Replies
2. Shell Programming and Scripting
Hi guys,
I am new to AWK and unix scripting. Please see below my problem and let me know if anyone you can help.
I have 2 input files (example given below)
Input file 2 is a standard file (it will not change) and we have to get the name (second column after comma) from it and append it... (5 Replies)
Discussion started by: sksahu
5 Replies
3. UNIX for Dummies Questions & Answers
What script can I use to catch errors in a shell script if user inputs alpha numeric characters instead on integers from the keyboard? (0 Replies)
Discussion started by: Pauline mugisha
0 Replies
4. Shell Programming and Scripting
i want to get input and depending on it create new commands for input to expect.
But problem is that after giving date or month as 01-09 it is interpretation as 1-9
echo -n "ENTER DATE "
read d1
echo -n "ENTER MONTH "
read m1
echo -n "ENTER YEAR"
read y1
o=1
i=1
d2=`expr $d1... (1 Reply)
Discussion started by: sagar_1986
1 Replies
5. Shell Programming and Scripting
Hello,
I'm trying to figure out how best to approach this script, and I have very little experience, so I could use all the help I can get. :wall:
I regularly need to delete files from many directories.
A file with the same name may exist any number of times in different subdirectories.... (3 Replies)
Discussion started by: *ShadowCat*
3 Replies
6. Shell Programming and Scripting
HI
i have written a script to ask input from the user.
this script should promote the user for y/n input. if user enters anyother input then y/n
the script promotes him again. this below code is working fine for all the cases.
except for space and enter " if i give space and enter it is... (2 Replies)
Discussion started by: BHASKARREDDY006
2 Replies
7. Shell Programming and Scripting
hi all
i'm new in shell scripting and now i'm working on project and i wanna make a function take input from user and test it's datatype then if correct write it to file
i wounder what is the best way to do this ?
can i use awk ?
edit by bakunin: Please give your threads a meaningful... (5 Replies)
Discussion started by: mohamed91
5 Replies
8. Shell Programming and Scripting
Dear Friends,
I am looking for a shell script to merge input files into one file .. here is my idea:
1st paramter would be outfile file (all input files content)
read all input files and merge them to input param 1
ex: if I pass 6 file names to the script then 1st file name as output file... (4 Replies)
Discussion started by: hyd1234
4 Replies
9. Homework & Coursework Questions
Just started learning Unix and received my first assignment recently. We haven't learned many commands and honestly, I'm stumped. I'd like to receive assistance/guidance/hints.
1. The problem statement, all variables and given/known data:
How do I write a shell script that takes in a file or... (4 Replies)
Discussion started by: fozilla
4 Replies
10. Shell Programming and Scripting
I am trying to allow a user to enter in text and then store that text in a variable $gene to run in an awk command in which those values are used to run some calculations. I am getting syntax errors however, when I try. Thank you :).
The awk runs great if it is a pre-defined file that is used,... (7 Replies)
Discussion started by: cmccabe
7 Replies
LEARN ABOUT OPENDARWIN
cut
CUT(1) BSD General Commands Manual CUT(1)
NAME
cut -- select portions of each line of a file
SYNOPSIS
cut -b list [-n] [file ...]
cut -c list [file ...]
cut -f list [-d delim] [-s] [file ...]
DESCRIPTION
The cut utility selects portions of each line (as specified by list) from each file and writes them to the standard output. If no file argu-
ments are specified, or a file argument is a single dash ('-'), cut reads from from the standard input. The items specified by list can be
in terms of column position or in terms of fields delimited by a special character. Column numbering starts from 1.
The list option argument is a comma or whitespace separated set of increasing numbers and/or number ranges. Number ranges consist of a num-
ber, a dash ('-'), and a second number and select the fields or columns from the first number to the second, inclusive. Numbers or number
ranges may be preceded by a dash, which selects all fields or columns from 1 to the first number. Numbers or number ranges may be followed
by a dash, which selects all fields or columns from the last number to the end of the line. Numbers and number ranges may be repeated, over-
lapping, and in any order. It is not an error to select fields or columns not present in the input line.
The options are as follows:
-b list
The list specifies byte positions.
-c list
The list specifies character positions.
-d delim
Use the first character of delim as the field delimiter character instead of the tab character.
-f list
The list specifies fields, delimited in the input by a single tab character. Output fields are separated by a single tab character.
-n Do not split multi-byte characters.
-s Suppress lines with no field delimiter characters. Unless specified, lines with no delimiters are passed through unmodified.
ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of cut if the -n option is specified. Their effect is described in
environ(7).
EXAMPLES
Extract users' login names and shells from the system passwd(5) file as ``name:shell'' pairs:
cut -d : -f 1,7 /etc/passwd
Show the names and login times of the currently logged in users:
who | cut -c 1-16,26-38
DIAGNOSTICS
The cut utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
paste(1)
STANDARDS
The cut utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').
HISTORY
A cut command appeared in AT&T System III UNIX.
BUGS
The -c option is a synonym for the -b option, which causes incorrect behaviour in locales that support multibyte characters.
When operating on fields (-f option is specified), cut does not recognise multibyte characters, and the delim character is recognised in the
middle of multibyte sequences.
BSD
June 6, 1993 BSD