I have 2 questions:
1- How did you learn bash scripting so well?
2- I have to look at the whole /var/log/wtmp files. There are so many of them and I have to add them to one file but I can't this is what I did:
Code:
# Check for existing /tmp/tst folder
if [ "/tmp/tst" != "" ]; then
rm -rf /tmp/tst
# Make a directory in /tmp called tst
mkdir -p /tmp/tst
# Copy wtmp files in /tmp/tst folder and unzip them:
cp -f /var/log/wtmp* /tmp/tst/
fi
bzip2 -d /tmp/tst/wtmp-*.bz2 | last -f wtmp-* > wtmpfile
cat wtmpfile
Then I have to add all the logged time of my users together and give a total as output. In your script you just used "last" command. which gives you only information from present machine not all other servers on the network.
correct me if I am wrong....
hi.
I need a bash script which can login to an other mashin via SSH and then run some commands and then return the result to my mashine.
I dont know where to begin, I think first I will need a ssh connection, dont know how to make it,
then , do I need a ftp connection between the 2 mashins to... (5 Replies)
hello
anyone have done ssh login script without "expect"
(automatic login from host A / user b to Host B / user b without enter any passwords)?
cheers (2 Replies)
Hi,
When I run the following script
#!/bin/sh
email="rc@dll.com"
subject="response times are more than a SECOND"
rt=`tail audit.log | grep -i operationResponseTime | awk '{print $2}'`
if
then
### Mail the file to the mailbox
mail -s $subject $email <<-end
$rt
~.... (3 Replies)
Ok, there's been a good number of posts about this, but here goes. I want a script to log in to a system via ssh without using keys.
This will be used to log in to Cisco IOS devices.
I have tried the following, but could not get it to work:
SSH login expect shell script to supply username and... (1 Reply)
Hi,
I am a complete Unix novice and need some help with creating a login shell script. I have created a file with user details i.e. PIN, name etc and require help in recalling the specified details from the file and being prompted for a password on login. Any help would be very much appreciated.... (0 Replies)
Hello, first of all, I am a pretty experience c++ programmer, but have never really bothered learning bash scripting at all, so I know conceptually things that can be done in c++, but I'm not too sure about bash. I'm trying to learn Bash, and wanted to start out with a practical application. So I... (1 Reply)
Dear All
When I start the AIX(6100-06)audit subsystem.
the log will save in /audit/stream.out (or /audit/trail), but in default when /audit/stream.out to grow up to 150MB.
It will replace the original /audit/stream.out (or /audit/trail).
Then the /audit/stream.out become empty and... (2 Replies)
In bourne shell the PID generated for the command "ps" matches my login id PID in the command "who -Hu" but in bash/linux the PID generated with the same commands are different . Why so? (2 Replies)
Hello everyone.
I'm a Linux novice trying out a lot of bash scripting lately, as it is so very addictive.
Lately I have been setting up one of my boxes remotely and have been hardening it as much as possible. Please allow me to explain the scenario, as it does tend to become a little... (1 Reply)
I'm new to utilities like socat and netcat and I'm not clear if they will do what I need.
I have a "compileDeployStartWebServer.sh" script and a "StartBrowser.sh" script that are started by emacs/elisp at the same time in two different processes.
I'm using Cygwin bash on Windows 10.
My... (3 Replies)
Discussion started by: siegfried
3 Replies
LEARN ABOUT DEBIAN
tst
tst(3) InterNetNews Documentation tst(3)NAME
tst - ternary search trie functions
SYNOPSIS
#include <inn/tst.h>
struct tst;
struct tst *tst_init(int node_line_width);
void tst_cleanup(struct tst *tst);
int tst_insert(struct tst *tst, const unsigned char *key, void *data, int option, void **exist_ptr);
void *tst_search(struct tst *tst, const unsigned char *key);
void *tst_delete(struct tst *tst, const unsigned char *key);
DESCRIPTION
tst_init allocates memory for members of struct tst, and allocates the first node_line_width nodes. A NULL pointer is returned by tst_init
if any part of the memory allocation fails. On success, a pointer to a struct tst is returned.
The value for node_line_width must be chosen very carefully. One node is required for every character in the tree. If you choose a value
that is too small, your application will spend too much time calling malloc(3) and your node space will be too spread out. Too large a
value is just a waste of space.
tst_cleanup frees all memory allocated to nodes, internal structures, as well as tst itself.
tst_insert inserts the string key into the tree. Behavior when a duplicate key is inserted is controlled by option. If key is already in
the tree then TST_DUPLICATE_KEY is returned, and the data pointer for the existing key is placed in exist_ptr. If option is set to
TST_REPLACE then the existing data pointer for the existing key is replaced by data. Note that the old data pointer will still be placed
in exist_ptr.
If a duplicate key is encountered and option is not set to TST_REPLACE then TST_DUPLICATE_KEY is returned. If key is zero length then
TST_NULL_KEY is returned. A successful insert or replace returns TST_OK. A return value of TST_ERROR indicates that a memory allocation
error occurred while trying to grow the node free.
Note that the data argument must never be NULL. If it is, then calls to tst_search will fail for a key that exists because the data value
was set to NULL, which is what tst_search returns. If you just want a simple existence tree, use the tst pointer as the data pointer.
tst_search finds the string key in the tree if it exists and returns the data pointer associated with that key.
If key is not found then NULL is returned, otherwise the data pointer associated with key is returned.
tst_delete deletes the string key from the tree if it exists and returns the data pointer assocaited with that key.
If key is not found then NULL is returned, otherwise the data pointer associated with key is returned.
HISTORY
Converted to POD from Peter A. Friend's ternary search trie documentation by Alex Kiernan <alex.kiernan@thus.net> for InterNetNews 2.4.0.
$Id: tst.pod 9074 2010-05-31 19:01:32Z iulius $
INN 2.5.3 2011-06-10 tst(3)
02-18-2012
this is what I did: