The following will process the back arrow keys by removing the codes for these keys plus removing the previous character (since the codes are indicating this character should be deleted):
The combination ^[ shown should actually be entered as an escape character. Notice we need a while loop - the /g switch will not work (at least not that I can see).
The problem with this is that it is specific to back arrow keys. If the person presses some other keys and tries to erase them with back arrow, this code may fail. The general problem of line editing can be messy.
Another approach would be to present the user with numbered menu items and check which menu item was selected. This would prevent mistyping the name of a program. The menu could be static or could even be generated dynamically by the shell script.
Hello,
Im using cygwin app which we use the bash shell for scripting.
Im trying to read a filename with consecutive spaces on the filename
ex: filename<space><space>1.txt
ls -lrt filename<space><space>1.txt is working but when I pull that from a file and place it into variable. it reads... (1 Reply)
Hi ,
I am currently using the while loop in bash shell, as follows.
while read line
do
echo $line
done < file.txt
However, i want to use the while loop on file.txt, which will read the file with 4 lines of gap.
Ex- if file.txt is a file of 100 lines, then i want to use the loop such... (3 Replies)
Hi,
root@server] df -h
121G 14G 101G 12% /home
147G 126G 14G 91% /backup
We having our site files and images are storing in
/backup/home/user/files/ through symbolic link created in /home directory pointing in /backup directory as following.
root@server] cd /home... (1 Reply)
Hello everyone,
I am struggling a bit with a batch script that I need to run in cygwin. I work in winXP and I had to write some awk scripts to do some file manipulation, and now I would like to automate the process by just running a batch file so that my colleagues can use it easily.
Now, the... (2 Replies)
Hello!
Sorry, for my not so perfect english!
I want to stop bash shell script execution until any key is pressed.
This line in a bash shell script
read -n1 -r -p "Press any key to continue..." key
produces this error
When I run this from the command line
usera@lynx:~$ read... (4 Replies)
I'm writing a bash script that reads a file location from a user, and I'm wondering how to get the script to accept tab to auto complete the directories that are input. (8 Replies)
I'm putting together a script that will search my mail archives for emails that meet certain criteria and output the files to a text file.
I can manually cat that text file and pipe it into sendmail and it will work (i.e. cat /pathtofile/foo.txt | sendmail -t me@company.com)
My script sends... (7 Replies)
I am very new to all these programming languages and really love Linux but have only begun to dive into bash scripting... I am curious what's going on with this script...
#!/bin/bash
if ; then
# xen
grep control_d /proc/xen/capabilities >& /dev/null
if ; then
# domU -- do not run on... (2 Replies)
So I'm trying to pass certain json elements as env vars and use them later on in a script.
Sample json:
JSON='{
"Element1": "file-123456",
"Element2": "Name, of, company written in, a very weird way",
"Element3": "path/to/some/file.txt",
}'
(part of the) script:
for s... (5 Replies)
In Bash shell - the ps -ef shows only the /bin/bash but the script name is not displayed ? Is there any way to get the script names for the process command ?
--- Post updated at 08:39 AM ---
in KSH (Korn Shell), my command output shows the script names but when run in the Bash Shell... (3 Replies)
Discussion started by: i4ismail
3 Replies
LEARN ABOUT PHP
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