08-05-2010
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I am trying get "df -k" output from multiple hosts along with their hostnames via ssh, my script is appending the "df -k" output from all the nodes to a single file but not getting the hostnames for those nodes, just wondering how to pass more than one command via ssh or may be someone could come... (6 Replies)
Discussion started by: barkath
6 Replies
2. UNIX for Advanced & Expert Users
I do a ssh to remote host(A1) from local host(L1). I then ssh to another remote(A2) from A1.
When I do a who -m from A2, I see the "connected from" as "A1".
=> who -m
userid pts/2 2010-03-27 08:47 (A1)
I want to identify who is the local host who initiated the connection to... (3 Replies)
Discussion started by: gomes1333
3 Replies
3. Shell Programming and Scripting
Hi guys.
i need some help, i need to create a script in tcsh that rsh into all my hosts that we have at our business, then cd to a directory (cd /apps/users) then grab a file from the users folder and ftp it back to my windows machine. can someone please help?
Kind regards.
Brian Behrens (2 Replies)
Discussion started by: brian112
2 Replies
4. Shell Programming and Scripting
Hi im trying to write a script to logon to list of servers with same userID. I have no option/plan to implement ssh-keygen sharing between the systems, so i have written script creating 2 files,
file1 holds list of hosts
host1
host2
host3
file2 has following script
for i in `cat file1`... (1 Reply)
Discussion started by: dreamaix
1 Replies
5. Shell Programming and Scripting
Hi friends,
i need to prepare a script ( in perl)
i have a file called "demo.exe" in my local unix host.
i have a list of remote hosts in a file "hosts.txt"
now i need to push "demo.exe" file to all the hosts in "hosts.txt" file.
for this i need to prepare a script(in perl, but shell... (5 Replies)
Discussion started by: siva kumar
5 Replies
6. UNIX for Dummies Questions & Answers
Hi guys - I am having a hard time trying to figure how to search for a certain string on config files hosted on multiple hosts.
This is an example:
Hostnames: myhost1.mycompany.com|myhost2.mycompany.com|myhost3.mycompany.com
String to search for: myipaddress.somehost.com
Directory... (9 Replies)
Discussion started by: DallasT
9 Replies
7. Shell Programming and Scripting
Hello,
I am trying to login to multiple servers and i have to run multiple loops to gather some details..Could you please help me out.
I am specifically facing issues while running for loops.
I have to run multiple for loops in else condition. but the below code is giving errors in for... (2 Replies)
Discussion started by: mohit_vardhani
2 Replies
8. Shell Programming and Scripting
Dear Folks,
I am trying to read a config file contains ip and port numbers.
i want to read each line of the config file and check ssh connection is happening or not.
Kindly guide.
Config file:
abc@1.2.342 22
abc@1.2.343 22
abc@1.2.344 22
abc@1.2.345 22... (9 Replies)
Discussion started by: sadique.manzar
9 Replies
9. Shell Programming and Scripting
Hello all,
i'm trying to create a report by greping a pattern on multiple remote hosts and creta a simple report,
actually i did this, is ther any better way to do this.
#!/bin/bash
for host in `cat RemoteHosts`
do
ssh $host -C 'hostname 2>&1; grep ERROR /var/log/WebServer.log.2019-09-21... (0 Replies)
Discussion started by: charli1
0 Replies
10. Shell Programming and Scripting
I'm trying to copy a file myfile.scr from my local Linux server to multiple folders on remote AiX server using single rsync command.
Below command helps me copy the file "myfile.scr" from my localhost to a remote host folder "/app/deployment/tmpfiles"
rsync --delay-updates -F --compress... (1 Reply)
Discussion started by: mohtashims
1 Replies
LEARN ABOUT FREEBSD
pbmreduce
pbmreduce(1) General Commands Manual pbmreduce(1)
NAME
pbmreduce - read a portable bitmap and reduce it N times
SYNOPSIS
pbmreduce [-floyd|-fs|-threshold ] [-value val] N [pbmfile]
DESCRIPTION
Reads a portable bitmap as input. Reduces it by a factor of N, and produces a portable bitmap as output.
pbmreduce duplicates a lot of the functionality of pgmtopbm; you could do something like pnmscale | pgmtopbm, but pbmreduce is a lot
faster.
pbmreduce can be used to "re-halftone" an image. Let's say you have a scanner that only produces black&white, not grayscale, and it does a
terrible job of halftoning (most b&w scanners fit this description). One way to fix the halftoning is to scan at the highest possible res-
olution, say 300 dpi, and then reduce by a factor of three or so using pbmreduce. You can even correct the brightness of an image, by
using the -value flag.
OPTIONS
By default, the halftoning after the reduction is done via boustrophedonic Floyd-Steinberg error diffusion; however, the -threshold flag
can be used to specify simple thresholding. This gives better results when reducing line drawings.
The -value flag alters the thresholding value for all quantizations. It should be a real number between 0 and 1. Above 0.5 means darker
images; below 0.5 means lighter.
All flags can be abbreviated to their shortest unique prefix.
SEE ALSO
pnmenlarge(1), pnmscale(1), pgmtopbm(1), pbm(5)
AUTHOR
Copyright (C) 1988 by Jef Poskanzer.
02 August 1989 pbmreduce(1)