I am on AIX 5.1
If I have a crontab that looks like this
01 1 * * 6
What does the 6 mean ? if the * means that everyday it should run then why would the 6th day be signified ? Shouldn't it be a * also?
Thanks (1 Reply)
I have a tab delimited file with many lines, one for each record.
each line is tab delimited with a tab before the first data field, a tab between each data field, and a tab after the last data field before it moves onto the next line.
I need to remove only the preceeding tab before the first... (2 Replies)
When formatting a script let's say for instance the following:
case ${choice} in
1)
vi ${tmp1}.tmp
# overwrite the tmp1 var with any user changes
cp ${tmp1}.tmp ${tmp1}
;;
... (2 Replies)
Hi People,
Does gvim latest versions support tabs. I would like to open different files in tabs rather than new windows or split windows. I would like to whether the current version supports it, if it doesn't then how to add such feature.
Thanks,
:) (2 Replies)
Hi,
I have a file that has too many tabs between columns. I cannot get the tabs out. Basically the tab between column 1 and 2 are fine but between 2/3, 3/4 etc are like 5 tabs. How do I get rid of these 5 tabs so its just 1 tab.
thanks (3 Replies)
Hi Guys
i current use Kcosole i have this liitle code that changes the tilte to the current directory that i am in
# Set the terminal title to pwd
case $TERM in
xterm*)
precmd() {print -Pn "\e]0;%~ \a"}
;;
esac
in Kconsole you can have... (0 Replies)
I am trying to get this to display vertically like in a table but it keeps jumping to a new line
dev=$(df -h | grep ^/dev | cut -d " " -f1)
dev1=$(df -h | grep ^/dev | cut -f 2 -d "%")
dev2=$(df -h | grep ^/dev | cut -f 14-16 -d " ")
dev3=$(df -h | grep ^/dev | cut -f 18-20 -d " ")... (1 Reply)
I want to know how can I remove all the tabs (\t) from a tab delimited file. In my file some of the rows only contain one column and rest are unoccupied but the tabs are there. When I performed some regular expressions to do substitutions like:
%s/\t/\/\/ /ig
all the hidden tabs are converted... (4 Replies)
Hi Everybody! First post! Totally noobie.
I'm using the terminal to read a poorly formatted book.
The text file contains, in the middle of paragraphs, hyphenation to split words that are supposed to be on multiple pages. It looks ve -- ry much like this.
I was hoping to use grep -v " -- "... (5 Replies)
Discussion started by: AxeHandle
5 Replies
LEARN ABOUT LINUX
update-motd
update-motd(5) File Formats Manual update-motd(5)NAME
update-motd - dynamic MOTD generation
SYNOPSIS
/etc/update-motd.d/*
DESCRIPTION
UNIX/Linux system adminstrators often communicate important information to console and remote users by maintaining text in the file
/etc/motd, which is displayed by the pam_motd(8) module on interactive shell logins.
Traditionally, this file is static text, typically installed by the distribution and only updated on release upgrades, or overwritten by
the local administrator with pertinent information.
Ubuntu introduced the update-motd framework, by which the motd(5) is dynamically assembled from a collection of scripts at login.
Executable scripts in /etc/update-motd.d/* are executed by pam_motd(8) as the root user at each login, and this information is concatenated
in /var/run/motd. The order of script execution is determined by the run-parts(8)--lsbsysinit option (basically alphabetical order, with
a few caveats).
On Ubuntu systems, /etc/motd is typically a symbolic link to /var/run/motd.
BEST PRACTICES
MOTD fragments must be scripts in /etc/update-motd.d, must be executable, and must emit information on standard out.
Scripts should be named named NN-xxxxxx where NN is a two digit number indicating their position in the MOTD, and xxxxxx is an appropriate
name for the script.
Scripts must not have filename extensions, per run-parts(8)--lsbsysinit instructions.
Packages should add scripts directly into /etc/update-motd.d, rather than symlinks to other scripts, such that administrators can modify or
remove these scripts and upgrades will not wipe the local changes. Consider using a simple shell script that simply calls exec on the
external utility.
Long running operations (such as network calls) or resource intensive scripts should cache output, and only update that output if it is
deemed expired. For instance:
/etc/update-motd.d/50-news
#!/bin/sh
out=/var/run/foo
script="w3m -dump http://news.google.com/"
if [ -f "$out" ]; then
# Output exists, print it
echo
cat "$out"
# See if it's expired, and background update
lastrun=$(stat -c %Y "$out") || lastrun=0
expiration=$(expr $lastrun + 86400)
if [ $(date +%s) -ge $expiration ]; then
$script > "$out" &
fi
else
# No cache at all, so update in the background
$script > "$out" &
fi
Scripts should emit a blank line before output, and end with a newline character. For instance:
/etc/update-motd/05-lsb-release
#!/bin/sh
echo
lsb-release -a
FILES
/etc/motd, /var/run/motd, /etc/update-motd.d
SEE ALSO motd(5), pam_motd(8), run-parts(8)AUTHOR
This manpage and the update-motd framework was written by Dustin Kirkland <kirkland@canonical.com> for Ubuntu systems (but may be used by
others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version
3 published by the Free Software Foundation.
On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.
update-motd 13 April 2010 update-motd(5)