Hi,
I am new to Unix and shell programming.
I am trying to write a shell program to read 4 variables from command line.
For example,
Please enter your name: somebody
Please enter your address: address
plase enter your phone: phone
I'd like to save all threee variables in my program for... (3 Replies)
I have thousands of lines a day of data I would like to sort out. Every sessions has the 3 lines below. I want to figure out each sessions length from Creation to Deletion. Every one has a unique session ID
logevent3:<190>Nov 20 08:41:06 000423df255c: 6|4096|RC|CAC: Created CAC session ID... (2 Replies)
Hi
I'm running a program many times with differents input.
I mean that i run my_prog with some parameters and i wait till the end, then i start again another simulations with some others differents parameters.
Is possible to make it automatic with a script bash.
Maybe i need some... (2 Replies)
Hi,
I need to install the following program on my Linux box (Red Hat)
Software for Pyrosequencing Noise Removal
The software only runs on Linux computers with MPI -I do not have MPI on my computer. I was hoping someone could please point me in the right direction so I can download and... (2 Replies)
Okay so I've got a command to start my java server up, but I want it to start at say 8:00AM and then stop at 11:00PM. In order to stop it I have to type stop and press enter in the terminal. I've been trying to get this to work and I'm having no luck. Here's my command:
#!/bin/bash
cd "`dirname... (2 Replies)
I'm trying to run MPI programs on 8 machines, but I get the error
connect to address 127.0.0.1 port 544: Connection refused
Trying krb4 rsh...
connect to address 127.0.0.1 port 544: Connection refused
trying normal rsh (/usr/bin/rsh)
lagrid02: Connection refused
When I run it with a... (8 Replies)
We have a program source C and is required to indicate how many times each function is called from the C program. also print the line number where there is a call.
I've tried something like this:
#!/bin/sh
for i in $*;do
if !
then
echo $i is not a C file.
else echo $i... (0 Replies)
I am new in Linux and clustering. I am setting up a Beowulf Cluster using several PCs according to this guide "Beowulf How-To"
I have setup and configure accordingly except for NFS part. Because I am not requiring it for my application. I have set my ssh to login each other without password. I... (1 Reply)
Hi guys,
I have written a script that waits for a trigger file.
Then checks the time of the trigger.
if the trigger finished between 8pm and midnight then runs a job.
else it waits till 1am then runs a different job.
I am still very new to scripting so any suggestions to improve my... (4 Replies)
Discussion started by: twinion
4 Replies
LEARN ABOUT ULTRIX
compact
compact(1) General Commands Manual compact(1)Name
compact, uncompact, ccat - compress and uncompress files, and cat them
Syntax
compact [name...]
uncompact [name...]
ccat [file...]
Description
The command compresses the named files using an adaptive Huffman code. If no file names are given, the standard input is compacted to the
standard output. The command operates as an on-line algorithm. Each time a byte is read, it is encoded immediately according to the cur-
rent prefix code. This code is an optimal Huffman code for the set of frequencies seen so far. It is unnecessary to prepend a decoding
tree to the compressed file since the encoder and the decoder start in the same state and stay synchronized. Furthermore, and can operate
as filters. In particular,
... | compact | uncompact | ...
operates as a (very slow) no-op.
When an argument file is given, it is compacted and the resulting file is placed in file.C; file is unlinked. The first two bytes of the
compacted file code the fact that the file is compacted. This code is used to prohibit recompaction.
The amount of compression to be expected depends on the type of file being compressed. Typical values of compression are: Text (38%), Pas-
cal Source (43%), C Source (36%) and Binary (19%). These values are the percentages of file bytes reduced.
The command restores the original file from a file compressed by If no file names are given, the standard input is uncompacted to the stan-
dard output.
The command cats the original file from a file compressed by without uncompressing the file.
The command is present only for compatibility. In general, the command runs faster and gives better compression.
Restrictions
The last segment of the file name must contain fewer than thirteen characters to allow space for the appended '.C'.
Files
compacted file created by compact, removed by uncompact
See Alsocompress(1)compact(1)