10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
im creating a csv file for email reporting on issues.
my problem is that after 'continue' command in if statment in a loop
the new paramter writing into the log doesnt take new line.
timeout 4s zabbix_get -I $ZBX -p $PORT -s $IP -k "system.run"
if ; then
... (3 Replies)
Discussion started by: batchenr
3 Replies
2. Shell Programming and Scripting
I am fairly new to writing scripts, and have gotten a lot of help from this site in the past with many of the posts.
I have a question/issue with a script I am attempting to write and have a question regarding executing an sql statement inside of a loop (do while). I have in the past written... (1 Reply)
Discussion started by: josbor01
1 Replies
3. UNIX for Dummies Questions & Answers
Hi admin,
I have two files which is on row and many columns ( both are identical), I need to add both the files with two columns and many row.
I have opted the solution in the following way.
awk '{ for (i=1;i<=NF;i++) { print $i;}}' tmp1 > tmp
mv tmp tmp1
awk '{ for (i=1;i<=NF;i++) {... (3 Replies)
Discussion started by: senthil.ak
3 Replies
4. Shell Programming and Scripting
Hello everyone
I was hoping someone could tell me whether I can use a wildcard inside an tcsh if statement.
I am trying to test the argument the user has fed the script and whether it is a .txt file.
The Ides behind it is the following
if (`echo $1` != *.txt) then
echo "wrong... (6 Replies)
Discussion started by: smarones
6 Replies
5. Shell Programming and Scripting
Please let me know if I can use -F option and - V in a single awk statment. I want to import some comma separated shell variables using -F option and defining some static variables inside awk using -v option. (2 Replies)
Discussion started by: kalee
2 Replies
6. UNIX for Dummies Questions & Answers
I need to validate the special characters of a date (the characters between the year and month & month and day). The data filed is being populated by users and read into the script vi an argument. I want to ensure that the date is a '-' (dash) and not a '/' or '\' (slash).
The every thing I... (3 Replies)
Discussion started by: angelap
3 Replies
7. UNIX for Dummies Questions & Answers
Can someone tell me what exactaly the following command is doing -
pid_cmd="/usr/ucb/ps -axww | /usr/bin/egrep '${SUNMC2OSS_PATH}/SunMC2OSS\.jar.* sunmc2oss\.SunMC2OSS\$' | /usr/bin/egrep -v egrep | /usr/bin/nawk '{print \$1}'"
Is the egrep is to check "sunmc2oss.SunMC2OSS" process inside... (2 Replies)
Discussion started by: puneet1983
2 Replies
8. UNIX for Dummies Questions & Answers
In DOS you can call a section of code multiple times by using the Call Statment I.E.
Call :Test1
:Test1
If My_Name = Yourname
then My_name > Name.txt
Can this be done in a Unix Script? (21 Replies)
Discussion started by: jadionne
21 Replies
9. Shell Programming and Scripting
I am looking to find something in the hour(in field $2) of 03:00:07 and 04:00:07 and 05:00:07 and must contain something in field 4... why doesn't below command work?
I try to use grep .. but since I am running this in loop, it's best I use the awk ..
can someone please advise.. I am pretty... (1 Reply)
Discussion started by: hankooknara
1 Replies
10. UNIX for Advanced & Expert Users
hi 2 all,
I'm trying 2 print " ' " in an awk statement but the sign deosn't show.
The only way I came with is 2 declare the ' as a variable and call that variable.
I'm trying 2 do:
awk '{printf("insert into ba_memo_01 values ('%s');",$1)}'
and get the output:
insert into ba_memo_01 values... (7 Replies)
Discussion started by: baraka
7 Replies
pipe(2) System Calls Manual pipe(2)
NAME
pipe() - create an interprocess channel
SYNOPSIS
DESCRIPTION
creates an I/O mechanism called a pipe and returns two file descriptors, fildes[0] and fildes[1]. fildes[0] is opened for reading and
fildes[1] is opened for writing.
A read-only file descriptor fildes[0] accesses the data written to fildes[1] on a first-in-first-out (FIFO) basis. For details of the I/O
behavior of pipes see read(2) and write(2).
By default, HP-UX pipes are not STREAMS-based. It is possible to generate the kernel so that all pipes created on a system are STREAMS-
based. This can only be done for HP-UX releases 10.0 and later. STREAMS-based FIFOs (created by or are not supported on HP-UX.
To generate a kernel that supports STREAMS-based pipes:
o STREAMS/UX must be installed.
o The module and the driver must be included in the file. (When STREAMS/UX is installed, and are automatically added to the system
file.)
o The tunable parameter (see streampipes(5)) must be set to 1 in the file. (This is not automatically done when STREAMS/UX is
installed.)
o The kernel must be generated and the system rebooted. Once this is done, all pipes created by will be STREAMS-based.
For more information, see
EXAMPLES
The following example uses to implement the command string
RETURN VALUE
returns one of the following values:
Successful completion.
Failure.
is set to indicate the error.
ERRORS
sets to one of the following error values if the corresponding condition is true.
or more file descriptors are currently open.
The system file table is full.
The file system lacks sufficient space to create the pipe.
Could not allocate resources for both Stream heads
(STREAMS-based pipes only).
SEE ALSO
sh(1), read(2), write(2), popen(3S), privileges(5), streampipes(5), streamio(7).
STANDARDS CONFORMANCE
pipe(2)