Noob question: How to check the total number of inputs entered by user?
Say I have this line:
I want to write a while loop that repeatedly asks for input if the number of inputs entered is not equal to 3.
I don't know the correct command to find the number of inputs entered. Help, please?
I need the date validation. I searched in the google but i didn't find my requirements.
requirements:
1) user has to enter the date in YYYY/MM/DD format
2) MM validations
3) DD validations.
and if the month is april it should allow 30 days only and for May month it should allow 31 days like... (1 Reply)
Hello everyone!
I am a bit inexperienced with administering queueing programs. I installed Torque (a PBS derivative) on a Linux cluster and it is running well. There is one annoying problem though: users can run massively parallel jobs and serial jobs too. Almost all users do a mix of the two. I... (0 Replies)
Hi i am a total noob at shell scripting. i was wondering if somebody could help me with my script.
i want the script to search the dev folder for the burner file
because they are different between distrubutions? as i under stand it.
this i the script.
#!/bin/bash
echo "Script för att bränna 360... (4 Replies)
ok the user can only enter a number if a letter is entered it shouldnt be accepted
This is what i have so far
read -p "How many cars to enter:" cars
until
do
read -p "Invalid number. Please re-enter:" $tags
done (5 Replies)
Hello
Does the unix korn shell provide a function to convert number entered in command line argument to text or Character so that in next step i will convert Chr to Hex (6 Replies)
Hello,
I am new to awk and I am trying to figure out how to print an output based on user input.
For example:
ubuntu:~/scripts$ steps="step1, step2, step3"
ubuntu:~/scripts$ echo $steps
step1, step2, step3
I am playing around and I got this pattern that I want:
... (3 Replies)
Hi Experts,
path=/db/files/
format=$1
User can enter any file format.compare the user file format with actual file format existed in the directory /db/files. User enter all characters as "A" apart from date format.
example1: user will be entering the file format AAA_AA_YYYYMMDD.AAA
Actual... (6 Replies)
Hello All,
I have a file of ip addresses called activeips.txt
What I'm trying to do is run a simple bash script that has a loop in it. The loop is a cat of the IP addresses in the file.
The goal is to run 2 nmap commands to give me outputs where each address in the list has an OS... (11 Replies)
Discussion started by: Dirk_Pitt
11 Replies
LEARN ABOUT POSIX
rlam
RLAM(1) General Commands Manual RLAM(1)NAME
rlam - laminate records from multiple files
SYNOPSIS
rlam [ -tS ][ -u ][ -iaN | -ifN | -idN | -iiN | -iwN | -ibN ] input1 input2 ..
DESCRIPTION
Rlam simply joins records (or lines) from multiple inputs, separating them with the given string (TAB by default). Different separators
may be given for different files by specifying additional -t options in between each file name. Note that there is no space between this
option and its argument. If none of the input files uses an ASCII separator, then no end-of-line character will be printed, either.
An input is either a stream or a command. Commands are given in quotes, and begin with an exclamantion point ('!'). If the inputs do not
have the same number of lines, then shorter files will stop contributing to the output as they run out.
The -ia option may be used to specify ASCII input (the default), or the -if option may be used to indicated binary IEEE 32-bit floats on
input. Similarly, the -id and -ii options may be used to indicate binary 64-bit doubles or integer words, respectively. The -iw option
specifies 2-byte short words, and the -ib option specifies bytes. If a number is immediately follows any of these options, then it indi-
cates that multiple such values are expected for each record. For example, -if3 indicates three floats per input record for the next named
input. In the case of the -ia option, no number indicates one line per input record, and numbers greater than zero indicate that many
characters exactly per record. For binary input formts, no number implies one value per record. For anything other than EOL-separated
input, the default tab separator is reset to the empty string.
A hyphen ('-') by itself can be used to indicate the standard input, and may appear multiple times. The -u option forces output after each
record (i.e., one run through inputs).
EXAMPLE
To join files output1 and output2, separated by a comma:
rlam -t, output1 output2
To join a file with line numbers (starting at 0) and its reverse:
cnt `wc -l < lam.c` | rlam - -t: lam.c -t '!tail -r lam.c'
To join four data files, each having three doubles per record:
rlam -id3 file1.dbl file2.dbl file3.dbl file4.dbl > combined.dbl
AUTHOR
Greg Ward
SEE ALSO cnt(1), histo(1), neaten(1), rcalc(1), tabfunc(1), total(1)RADIANCE 7/8/97 RLAM(1)