10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Linux System having all Perl, Python, PHP (and Ruby) installed
From a Shell script, can call a Perl, Python, PHP (or Ruby ?) file
eg
eg
a Shell script run in a case statement call to run a php file, also Perl or/and Python file???
Like
#!/usr/bin/bash
....
....
case $INPUT_STRING... (1 Reply)
Discussion started by: hoyanet
1 Replies
2. Shell Programming and Scripting
Hi,
I'm facing issues while trying to run a sample program on Linux.
If I try to run the script using the command "sh <filename.prog>", it doesn't work. But, if I try to execute it using the command "ksh <filename.prog>", it works fine.
Even ". ./filename.prog" works fine.
Can you... (6 Replies)
Discussion started by: venkatesh17
6 Replies
3. Shell Programming and Scripting
Hello
I am trying to run a python program using shell script, which takes a single argument from a file.
This file has one entry per line :
1aaa
2bbb
3ccc
4ddd
5eee
...
...
...
My shell script runs the program, only for the last entry :
#!/bin/sh
IFS=$'\n'
for line in $(cat... (2 Replies)
Discussion started by: ad23
2 Replies
4. Shell Programming and Scripting
How to call a perl script in shell program / shell scripting.
PLS HELP ME (2 Replies)
Discussion started by: hravisankar
2 Replies
5. Shell Programming and Scripting
I need to write a c program that uses the fork and excel system calls to run the shell script mode invoked like this: "./mode 644 ls -l" (that is the argumetns will always be 644 ls -l)
here's the mode script:
#!/bin/sh
octal="$1"
shift
find . -maxdepth 1 -perm $octal -exec $@ {} \;
... (3 Replies)
Discussion started by: computethis
3 Replies
6. Shell Programming and Scripting
Hi all
i have a unix script reformatter.sh
i have a process whereby this script reformats a file before a perl program is used to update it
i am having a little problem automating the entire process . is there a way whereby i can call the unix script from the perl program ? (12 Replies)
Discussion started by: dwightja24
12 Replies
7. Shell Programming and Scripting
Hi,
I have a sheel script that invokes a perl script...Now, instead havin the perl script as a separate file I'd like put the contents in the sheel script itself...But I am not sure how ro run that perl script contents.please help me
Thanks (1 Reply)
Discussion started by: vijay_0209
1 Replies
8. Shell Programming and Scripting
Hello ,
I want to run some shell scripts in my perl script. I need to read the script's name from a file ( this file includes the name of all the scripts) and run the script one by one.. Please let me know how to go ..
Thanks in advance,
Radha (5 Replies)
Discussion started by: s123.radha
5 Replies
9. Shell Programming and Scripting
suppose have different files
1.1
2.2
3.3
4.4
5.5
All the files have to run under the same command say
tr -d '\n'
so how to run all the files under the same command by using shell script (3 Replies)
Discussion started by: cdfd123
3 Replies
10. Shell Programming and Scripting
Hi Perl/UNIX experts,
I have a problem in running a shell script from my perl script (auto.pl).
I run the perl script using
perl auto.pl
from the shell prompt
The shell script picks the files in "input" folder and procesess it.
The shell script blue.sh has this code.
export... (16 Replies)
Discussion started by: hifake
16 Replies
bup-margin(1) General Commands Manual bup-margin(1)
NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS
--predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO
bup-midx(1), bup-save(1)
BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown- bup-margin(1)