02-28-2009
Exclude Certain Entries from Piped or Redirected Output?
I want to execute a command something like:
find / -name "jni.h"
and I want to direct the output of that command to some type of
filter that will leave out all the lines reporting inaccessible
directories (permission unavailable). Is this a pipe or a redirect?
For example, output like the below is not useful to me:
$ find / -name "jni.h"
find: /.fseventsd: Permission denied
find: /.Spotlight-V100: Permission denied
find: /.Trashes: Permission denied
^C
I have been looking over awk, sed, grep and the like to no avail.
I know this is possible. I did it years ago when I worked in
a command line development environment but I'm having trouble
finding it again.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have an application which has a lot of cout & cerr statements.
This application also opens a log file (for eg a.log).
When this application is run from the inittab file as follows
/bin/sh -c " . /etc/timezone; exec /test"
all the cout & cerr statements are printed in the log file... (1 Reply)
Discussion started by: soorajmu
1 Replies
2. Shell Programming and Scripting
Hello Everyone,
I have an option for users in my shell script to create log file. So if user saying “yes” on it, I'm redirecting all output to log file by doing this: > /output.log. However I would like the output being displayed on the screen at the same time. Is it possible? If yes, does anybody... (2 Replies)
Discussion started by: slavam
2 Replies
3. UNIX for Dummies Questions & Answers
I have to confirm that an engine was not able to run. In the output below you see that it indeed got errors, but it didn't send those messages to the output file. When I run the same thing with a different executable it works. So does this mean something in the executable could cause it not to... (7 Replies)
Discussion started by: brdholman
7 Replies
4. Shell Programming and Scripting
Hi all,
I would like to store the output of a command in a variable and output it to the console at the same time. This is working fine using the following construct
var=`command | tee /dev/tty`
I use this in some scripts to display the output of the command on the console and, at the same... (2 Replies)
Discussion started by: script_man
2 Replies
5. Shell Programming and Scripting
Hello,
There is pipe chain and I want concacenate piped data with some variable:
balh blah| ... $var1
What command I should use instead ... to concatenate piped output with $var1. I think I coud solve this using temp var - but could it be done in one line like sample above ?
thanks... (4 Replies)
Discussion started by: vilius
4 Replies
6. Shell Programming and Scripting
Currently, i am trying to create a simple robust script that is intended to move the contents of a given source directory to a target directory. Optionally, the script should allow to either move the whole source dir content, or dotfiles only, or visible files only. I am aware the target directory... (0 Replies)
Discussion started by: shells_bells
0 Replies
7. Shell Programming and Scripting
hi
i have a script named mount.sh under the location /data/scripts/ in my aix box
i want this script this to be run everyday morning at 04:45 AM and the output of the script should be piped to a file
how to do this ? (3 Replies)
Discussion started by: samsungsamsung
3 Replies
8. UNIX and Linux Applications
Hi,
Pls check that '|' and '+' present in Step-1 are not copied to log file in Step-3.
Pls suggest how to get the exact output from Step-1 (i.e. with out losing '|' and '+') in to a log file
~Thanks
Step-1: Execute command
> mysql -utest -ptest -htesthost testdb -e "select * from... (3 Replies)
Discussion started by: newbielgn
3 Replies
9. Shell Programming and Scripting
Hello,
How can I efficiently cat piped output with another file?
> (awk command) | cat file1 (piped output)
Thanks! (11 Replies)
Discussion started by: palex
11 Replies
10. UNIX for Dummies Questions & Answers
Hi All,
Please could anyone advise what the purpose of the dot syntax in the following command means:
tar -cvf ${WORKING_BACKUP_ROOT}/${TAR_ARCHIVE_FILE} . >/${BACKUP_ROOT}/${ARCHIVE_LOG}
Many thanks (2 Replies)
Discussion started by: daveu7
2 Replies
AMIN(1) General Commands Manual AMIN(1)
NAME
amin - notify writers that you are busy
SYNOPSIS
amin [-ynesp] command [args...]
DESCRIPTION
Amin is used when you don't want to be written while running a command. It runs the command given normally. If your message permissions
(see mesg(1)) are off, it does nothing much else. If your messages are on, people writing you with write(1) will be warned that you are
running that command and will be given the opportunity to change their minds about writing you.
The -n option may be used to turn your messages entirely off for the duration of the execution of command. People writing you will get
"Permission denied". The -y option turns your message permissions on for the duration of the execution of the command. The -e may be used
after either -n or -y to indicate that the logins listed in the .yeswrite or the .nowrite files respectively are exceptions to the message
permissions set. The default is -s which leaves your message permissions in their original state. In any case, after the command is com-
plete, your permissions will be restored to the original state.
The -p flag causes all telegrams sent to you while the command is running to be saved. They are displayed as soon as the command is com-
plete. If used with the -n flag, writes are refused, but telegrams are still saved.
If you have designated yourself as a helper, you will still be marked on the finger(1) output as a helper while you are running amin but
people doing ``write help'' will not be connected to you, even if you have the helper flag set to ``Y''.
AUTHOR
Jan Wolter
FILES
/etc/wrttmp to find message permissions
/etc/utmp to find user
SEE ALSO
mesg(1), finger(1), write(1), huh(1).
7th Edition July 1, 1991 AMIN(1)