07-20-2010
Hi.
I assume you are asking what happened to the escape sequence "\e" when you supply the command directly to watch.
I think the command is being scanned by the shell twice, once on the command line when you give it to watch, and again when watch executes it. If so, then the "\" will disappear, although I would have expected the "e" to remain.
You can test this -- suppose you use your shell script (the 2-liner with bash) as the command in watch. What happens then? ... cheers, drl
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I did a search and found the link for escape codes,- but I am not sure how to modify this script to set the margins.
I started with a script that was already written on my system to set a printer to print landscape. I need to send an report that is in an ascii file to multiple printers from my... (1 Reply)
Discussion started by: MizzGail
1 Replies
2. Shell Programming and Scripting
I apologize if I have already posted this query. I scanned back quite a few pages but could not find such a query.
If my perl code contains "exit(33)" how can I get that value in bash for use in a "if" statement.
Thanks,
Siegfried (5 Replies)
Discussion started by: siegfried
5 Replies
3. Shell Programming and Scripting
Hi,
I am interesting in writing the following bash codes into perl
My script is simple take field 2 in /etc/passwd and put into an array
#!/bin/bash
PASSWD_FILE=/etc/passwd
A=(`awk -F: ' { print $2 }' $PASSWD_FILE `)
Can someone give me equivalent codes in perl ? (1 Reply)
Discussion started by: phamp008
1 Replies
4. UNIX for Dummies Questions & Answers
Hi all,
Not sure how "for dummies" this question is, but I'd better use understatement...
A. My Environment
==============
I am using RedHat Linux, version 2.6.18-53.el5.
When I type less --version I get:
less 394
Copyright (C) 1984-2005 Mark Nudelman
...
My terminal is configured... (1 Reply)
Discussion started by: Source2Exe
1 Replies
5. Ubuntu
I thought it may be nice to use rdiff-backup to backup my websites to a thumb drive. But all the capital letters are substituted with octal escape codes. How can I over come this?
There are no issues backing up to another ext3 drive.
The source drive is ext3 the thumb drive is vfat mounted... (0 Replies)
Discussion started by: mikemc
0 Replies
6. UNIX for Advanced & Expert Users
I ported application from SysV to Linux and run into troubles with printing.
Application uses lp and HP JetDirect-based printers, it inserts HP control codes in the file and uses plain lp -d dest doc-file command to print it.
The Linux (Ubuntu 8) has CUPS system, which I am not familiar... (0 Replies)
Discussion started by: migurus
0 Replies
7. Shell Programming and Scripting
Here is my daily stupid question:
How can I tell a script to only execute if the other scripts exits successfully?
So "script A" executes and it executes successfully (0),then "script B" will run
or else
"script A "executes and it exits unsucessfully (1) then "script B" will read return... (6 Replies)
Discussion started by: metallica1973
6 Replies
8. Shell Programming and Scripting
This is a bit off the wall, but I often need to run scripts where there are argument values that contain special characters.
For example,
$ ./process.exe -t M -N -o temp.mol.s -i ../molfiles/N,N\',N\'\'-trimethylbis\(hexamethylene\)triamine.mol && sfile_space_to_tab.sh temp.mol.s temp.s
It... (1 Reply)
Discussion started by: LMHmedchem
1 Replies
9. Shell Programming and Scripting
Hello.
I use bash functions which are in different script files.
Theses scripts function files are sourced when necessary.
As function does not easily return string value, Value are return using the echo function, and a return code is returned..
Now here my question :
In the main script I... (11 Replies)
Discussion started by: jcdole
11 Replies
10. UNIX for Beginners Questions & Answers
Hi,
I am new in bash scripting. In my work, I provide support to several users and when I connect to their computers I use the same admin and password, so I am trying to create a script that will only ask me for the IP address and then connect to the computer without having me to type the user... (5 Replies)
Discussion started by: arcoa05
5 Replies
LEARN ABOUT XFREE86
libbash
LIBBASH(7) libbash Manual LIBBASH(7)
NAME
libbash -- A bash shared libraries package.
DESCRIPTION
libbash is a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may
want to load and use in scripts of your own.
It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries.
Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1). A bash shared library that can be loaded
using
ldbash(1) must answer 4 requirments:
1. It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash).
2. It must contain a line that begins with '#EXPORT='. That line will contain (after the '=') a list of functions that the library
exports. I.e. all the function that will be usable after loading that library will be listed in that line.
3. It must contain a line that begins with '#REQUIRE='. That line will contain (after the '=') a list of bash libraries that are
required for our library. I.e. every bash library that is in use in our bash library must be listed there.
4. The library must be listed (For more information, see ldbashconfig(8)).
Basic guidelines for writing library of your own:
1. Be aware, that your library will be actually sourced. So, basically, it should contain (i.e define) only functions.
2. Try to declare all variables intended for internal use as local.
3. Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with:
__<library_name>_
For example, internal function myfoosort of hashstash library should be named as
__hashstash_myfoosort
This helps to avoid conflicts in global name space when using libraries that come from different vendors.
4. See html manual for full version of this guide.
AUTHORS
Hai Zaar <haizaar@haizaar.com>
Gil Ran <ril@ran4.net>
SEE ALSO
ldbash(1), ldbashconfig(8), getopts(1), hashstash(1) colors(1) messages(1) urlcoding(1) locks(1)
Linux Epoch Linux