i am writing a script to perform some mysqldumps and gzip them. The problem I am running into is that if the user specifies a database that doesn't exist, the error the mysql engine produces is still piped into gzip, and the exit code returned is 0. If I don't pipe into gzip, an exit code indicating failure is raised. Is there anyway I can catch this error, and still use piping?
I'm receiving an exit code 64 in our batch scheduler (BMC product control-m) executing a PERL script on UX-HP. Can you tell me where I can find a list of exit codes and their meaning. I'm assuming the exit code is from the Unix operating system not PERL. (3 Replies)
Hi,
I am kinda confused with this, am not sure what is happening
i have a script say test.sh
----------
cat myfile | while read line
do
exit 2
done
echo "out of loop"
-----------
as it is evident, the exit should cause the script to terminate ,hence producing no output for the... (1 Reply)
I am trying to have a script run without interaction from the command line. So in my script i have a line like this
echo -e "\n\n\ny\ny\n" | ./script
the goal being the ability to mimic 3 Enter presses and 2 'y/n' responses with 'y' followed by enter.
For some reason tho, it is not... (1 Reply)
Hi friends
I have a zip file 1.zip which contains three text files a.txt b.txt c.txt
I want to grep some text(keyword) in those 3 files without extracting all the three files to a local directoryusing the command,
unzip -p 1.zip |grep "search text" >result.txt
The Output file is... (2 Replies)
Hi All,
i have a script named as 1. scr_FTP.sh, it calls the script(2)
2. file_create.sh
And in that 2nd script, i use the below function run_complete_workflow().
I introduced exit(1) to exit from the function: run_complete_workflow() and also from the 2nd script: file_create.sh and... (3 Replies)
I'm trying to pipe the output from a command into another using xargs but is not getting what I want. Running this commands:
find . -name '33_cr*.rod' | xargs -n1 -t -i cut -f5 {} | sort -k1.3n | uniq | wc -l
give the following output:
cut -f5 ./33_cr22.rod
cut -f5 ./33_cr22.rod
...
9224236... (7 Replies)
Hey,
I want to create a new file (devices) with the 39th and the 40th character of the line wich is in the array line and in the file drivers.
But unfortunately my try doesn't work:
sed -n '$linep' drivers | cut -c 39-40 | echo >>devices Perhaps one of you can help me. Thank you!
emoly
... (0 Replies)
Hi ,
I have following code in my shell script :
"$TS_BIN/tranfrmr" "${TS_SETTINGS}/tranfrmr_p1.stx" "${TS_LOGS}/tranfrmr_p1.err" | (
"$TS_BIN/cusparse" "${TS_SETTINGS}/cusparse_p2.stx" "${TS_LOGS}/cusparse_p2.err" | (
"$TS_BIN/tsqsort" "${TS_SETTINGS}/srtforpm_p3.stx"... (8 Replies)
Hey guys. I'm very new to Unix. I'm pretty fluent in Java and C, but I have never actually used Unix for anything. I am in an Operating Systems course now and I have an assignment to write a piece of code that involves forks and piping. I'm stuck.
1. The problem statement, all variables and... (6 Replies)
Today I needed to take a look through a load of large backup files, so I wrote the following line to find them, order them by size, and print the file sizes in GB along with the filename. What happened was odd, the output was all as expected except for the first output line which had the filename... (4 Replies)
Discussion started by: gencon
4 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