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... (1 Reply)
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)
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)
Is there a way to keep the output of a script displayed on the terminal when it's run by itself, but suspend part of that output and only have a specific part delivered when it's piped to another script or program? I'm thinking something like the following pseudocode:
#!/bin/bash
... (1 Reply)
Hi All,
When starting an SSH tunnel, piped output 'hangs' (on AIX) :
ssh -Nf -Llocalhost:22000:server:22 proxy | cat -vet -
... hangs ...
Does anybody know how to prevent this?
Of course, in my script I don't use the tunnel as I do in the example above. In my script the call to ssh is... (7 Replies)
I have an encrypted password file, and I've created a simple script to search the password file for a particular record. There are multiple lines per record, so I'm using a record delimiter.
#!/bin/bash
PATTERN=$1
openssl des3 -d -salt -in ~/docs/pass.des3 | awk '{ FS="\n" ; RS="*" }... (2 Replies)
Hello,
I'm pretty stumped, and I don't know why I am not able to redirect the output to the 'graphme' file with the command below in Fedora 18.
tcpdump -l -n -t "tcp == 18" | perl -ane '($s,$j)=split(/,/,$F,2); print "$s\n";' > graphme
In case you're wondering, I was following the example... (2 Replies)
i need to do something like this:
script.sh
#!/bin/sh
echo "hello"
echo "My First name is John"
echo "My Last name is Smith"
echo "I am here to save you a lot of work"
sed -n 4,5p $0
i dont want to run the script. i just want to pull out specific line from it. so the logic here... (5 Replies)
to run most other scripts through a pipe, something similar to the following is usually enough:
cat script.sh | sh
cat perl.pl | perl -- "<arguments"
However, for javascript command line scripts, i cant seem to get this to work. Any ideas?
cat hull.js
#!/usr/bin/js
... (3 Replies)
Discussion started by: SkySmart
3 Replies
LEARN ABOUT REDHAT
cron
CRON(8) System Manager's Manual CRON(8)NAME
cron - daemon to execute scheduled commands (Vixie Cron)
SYNOPSIS
cron
DESCRIPTION
Cron should be started from /etc/rc or /etc/rc.local. It will return immediately, so you don't need to start it with '&'.
Cron searches /var/spool/cron for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into memory. Cron
also searches for /etc/crontab and the files in the /etc/cron.d/ directory, which are in a different format (see crontab(5)). Cron then
wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute. When execut-
ing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable in the crontab, if
such exists).
Additionally, cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has,
cron will then examine the modtime on all crontabs and reload those which have changed. Thus cron need not be restarted whenever a crontab
file is modified. Note that the Crontab(1) command updates the modtime of the spool directory whenever it changes a crontab.
SEE ALSO crontab(1), crontab(5)AUTHOR
Paul Vixie <paul@vix.com>
4th Berkeley Distribution 20 December 1993 CRON(8)