Hello everybody,
Is there a more elegant way to make dual output (display on standard output and append to a file) while I'm executing a shell script, besides duplicating the echo command for every string?
echo "Message..." > 1
echo "Message..." >> myfile.out
Thank you for your time,... (2 Replies)
hello hackers.
i have a curl process running as cgi directly pushing stdout to the client. but i want to additionally save that stream to a file at the same time.
any directions madly welcome.
thanks in advance (3 Replies)
I am trying to have a script ping all the clients then output it to a file so I know which clients are off then have the next script pull the ones that are online and reboot them.
This is what I am running with right now. If there is something KISS then by all means please let me know.
... (3 Replies)
hi
i m trying to print the permissions for a file in output
echo name
read name
touch name.txt
permission=$((ls -l $name.txt))
echo permission
please suggest where i went wrong? (2 Replies)
Hi All,
I have around 900 Select Sql's which I would like to run in an awk script and print the output of those sql's in an txt file.
Can you anyone pls let me know how do I do it and execute the awk script? Thanks. (4 Replies)
Hello all. I've been lurking here for a year or two and finally decided to post.
I need some assistance with file descriptors, stdout, and redirecting output. I've searched through a number of very helpful threads here (unfortunately I can't link to any of them yet due to my low post count...),... (2 Replies)
Hi Friends,
This is the only solution to my task. So, any help is highly appreciated.
I have a file
cat input1.bed
chr1 100 200 abc
chr1 120 300 def
chr1 145 226 ghi
chr2 567 600 unix
Now, I have another file by name
input2.bed (This file is a binary file not readable by the... (7 Replies)
I have a python script that gives output called test.png. By using the following command I run the script every 2 seconds. What is the easiest way to save the output as follows ( test.png (1st output), tes1.png (second output), tes2.png ....)
Command I i use
while sleep 2; do python... (1 Reply)
Why does this until false; do history | head -5; done
result in a stdout infinite loop, yet until false; do history | head -5 > hist5; done
only writes it once to file hist5? Furthermore, I can hear the hard drive working on the 2nd command until I end the process, but the history | head -5 is... (1 Reply)
Discussion started by: Xubuntu56
1 Replies
LEARN ABOUT XFREE86
annotate-output
ANNOTATE-OUTPUT(1) General Commands Manual ANNOTATE-OUTPUT(1)NAME
annotate-output - annotate program output with time and stream
SYNOPSIS
annotate-output [options] program [args ...]
DESCRIPTION
annotate-output will execute the specified program, while prepending every line with the current time and O for stdout and E for stderr.
OPTIONS
+FORMAT
Controls the timestamp format, as per date(1). Defaults to "%H:%M:%S".
-h, --help
Display a help message and exit successfully.
EXAMPLE
$ annotate-output make
21:41:21 I: Started make
21:41:21 O: gcc -Wall program.c
21:43:18 E: program.c: Couldn't compile, and took me ages to find out
21:43:19 E: collect2: ld returned 1 exit status
21:43:19 E: make: *** [all] Error 1
21:43:19 I: Finished with exitcode 2
BUGS
Since stdout and stderr are processed in parallel, it can happen that some lines received on stdout will show up before later-printed
stderr lines (and vice-versa).
This is unfortunately very hard to fix with the current annotation strategy. A fix would involve switching to PTRACE'ing the process.
Giving nice a (much) higher priority over the executed program could however cause this behaviour to show up less frequently.
The program does not work as well when the output is not linewise. In particular, when an interactive program asks for input, the question
might not be shown until after you have answered it. This will give the impression that the annotated program has hung, while it has not.
SEE ALSO date(1)SUPPORT
This program is community-supported (meaning: you'll need to fix it yourself). Patches are however appreciated, as is any feedback (posi-
tive or negative).
AUTHOR
annotate-output was written by Jeroen van Wolffelaar <jeroen@wolffelaar.nl> This manpage comes under the same copyright as annotate-output
itself, read /usr/bin/annotate-output (or wherever you install it) for the details.
DEBIAN Debian Utilities ANNOTATE-OUTPUT(1)