Hi.
I'm working on a project for a class, and there's one part of the project that is confusing me.
It's a compression and decompression project, and after we write our code for compression, we need to write to standard error.
(1) Size of original file (number of characters read... (1 Reply)
I have a program that is sending error text to the console and I need to redirect that output to a log file. I'm brand new to Unix and don't know how to do this. Any direction would be greatly appreciated. (1 Reply)
I'm writing a script using file descriptor 2 (std error) to send an email only if the command fails or errors out but the script always emails me irrepective of whether it fails or not. It will not email the /tmp/check.error file output if doesn't error out just the mail with the subject "Cannot... (3 Replies)
Hi all,
Maybe my question is too simple but till now i couldn't figure about a solution :(
I have a bash script scheduled in cron:
<cron time parameters> my_script.sh > result.log 2>&1
By this way i can have standard output and standard error in my result.log file
Now i want my script... (2 Replies)
Hello,
I would like to know if there is a shell in which operations such as 2| (redirect standard error of one process to the standard input of another one) exist?
I know it is possible to do it in bash with things like:
(process 2>&1) | other_process
but I find it a bit intricate when... (3 Replies)
Hi,
I want to redirect the standard output to standard error whenever an error occurs for ex
if
then
echo right
else
echo wrong
fi
I want to redirect the wrong to stderror .Adding a line 1>&2 will do that or is additional code to be added.How can i verify whether the output... (2 Replies)
Hey, I'm completely new at this and I was wondering if there is a way that I would be able to redirect the log files in a directories standard output and standard error into and excel spreadsheet in anyway?
Please remember don't use too advanced of terminology as I just started using shell... (6 Replies)
Hello Friends,
Good Day.
I am trying to redirect a standard error to the bit bucket(/dev/null) but it is not working. Though, it is working fine in redirecting the standard output.
Below is the output of my script without any redirection:
$ ./CheckVSSLocks.sh... (16 Replies)
I need to run a cronjob and in the cronjob I execute a script that if there is an error produces standard error so I do
/RUNMYSCRIPT 2> mylogfile.log
However, if it runs correctly, I don't get a standard error output, I get a standard out output. How do I redirect both standard error and... (2 Replies)
Testing this with KSH on RHEL
The bellow code works but i can't seem to handle the exit status of the unix command when it fails... i wanted to put something like >/dev/null 2>&1 to manage standard output and standard error but it changes my logic and the code doesn't work cause it doesn't... (11 Replies)
Discussion started by: maverick72
11 Replies
LEARN ABOUT CENTOS
grub-fstest
GRUB-FSTEST(1) User Commands GRUB-FSTEST(1)NAME
grub-fstest - debug tool for GRUB filesystem drivers
SYNOPSIS
grub-fstest [OPTION...] IMAGE_PATH COMMANDS
DESCRIPTION
Debug tool for filesystem driver.
Commands:
blocklist FILE
Display blocklist of FILE.
cat FILE
Copy FILE to standard output.
cmp FILE LOCAL
Compare FILE with local file LOCAL.
cp FILE LOCAL
Copy FILE to local file LOCAL.
crc FILE
Get crc32 checksum of FILE.
hex FILE
Show contents of FILE in hex.
ls PATH
List files in PATH.
xnu_uuid DEVICE
Compute XNU UUID of the device.
-c, --diskcount=NUM
Specify the number of input files.
-C, --crypto
Mount crypto devices.
-d, --debug=STRING
Set debug environment variable.
-K, --zfs-key=FILE|prompt
Load zfs crypto key.
-n, --length=NUM
Handle N bytes in output file.
-r, --root=DEVICE_NAME
Set root device.
-s, --skip=NUM
Skip N bytes from output file.
-u, --uncompress
Uncompress data.
-v, --verbose
print verbose messages.
-?, --help
give this help list
--usage
give a short usage message
-V, --version
print program version
Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.
SEE ALSO grub-probe(8)
The full documentation for grub-fstest is maintained as a Texinfo manual. If the info and grub-fstest programs are properly installed at
your site, the command
info grub-fstest
should give you access to the complete manual.
grub-fstest (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-FSTEST(1)