Hi all,
I have two (2) sets of files that are based on some snapshots of database that I want to merge and insert any missing sequential number.
Below are example representation of these files:
file1:
DATE TIME COL1 COL2 COL3 COL4 ID
01/10/2013 0800 100 ... (3 Replies)
Hi all,
I have large files with url-s ending on "|<number>" which is the Page Rank for the website as shown in the example below
http://www.machinokairo.com/2012/05/post-39.html|2
I am using "grep" to sort out all url-s in a particular way: first, remove all ending on "|0" and write the... (9 Replies)
Hi all, I’ve quick question on bash scripting.
Here is my initial input. This is just an example. The value could be different numbers/ip addresses.
host.txtFinal output should be like this.
output-final.txt
In order to have this, I’ve 2 different scripts.
The first one is just to... (6 Replies)
What is the correct syntax to pipe or run three awk commands? Basically, using the output of the first awk as input in the second. Then using the output of the second awk in the third. Thank you :).
awk 'FNR==NR {E; next }$3 in E {print $3, $5}' panel_genes.txt RefSeqGene.txt > update.txt |... (3 Replies)
my code:
gawk 'NR>'"${LASTLINENUM}"' && NR<='"${LINEENDNUM}"'' ${LOGFILE} | gawk '{l=$0;} /'"${STRING1}"'/ && /'"${STRING2}"'/ {for (i=NR-'"${BEFOREGLAF}"'; i<=NR+'"${AFTERGLAF}"'; i++) o=i; t++;} END { for(i=1; i<=NR; i++) if (o) print l; print t+=0;}'
i would like to combine this into one... (5 Replies)
Hi,
Can someone please guide me how to combine the following two awk calls in one?
I noticed that it is very often situation for me, and I think that it can be replaced with one awk call.
The question is more general, not the exact one.
echo "A B C/D" | awk '{print $3}' | awk -F/ '{print... (4 Replies)
The purpose of enclosed script is to execute selected command and output success or failure in whiptail msgBox
Works as expected when command returns zero to msgBox.
I cannot figure out how to continue / automate my script when command expects reply to continue / terminate. I am doing it... (2 Replies)
Discussion started by: annacreek
2 Replies
LEARN ABOUT LINUX
setsid
SETSID(2) Linux Programmer's Manual SETSID(2)NAME
setsid - creates a session and sets the process group ID
SYNOPSIS
#include <unistd.h>
pid_t setsid(void);
DESCRIPTION
setsid() creates a new session if the calling process is not a process group leader. The calling process is the leader of the new session,
the process group leader of the new process group, and has no controlling tty. The process group ID and session ID of the calling process
are set to the PID of the calling process. The calling process will be the only process in this new process group and in this new session.
RETURN VALUE
On success, the (new) session ID of the calling process is returned. On error, (pid_t) -1 is returned, and errno is set to indicate the
error.
ERRORS
EPERM The process group ID of any process equals the PID of the calling process. Thus, in particular, setsid() fails if the calling
process is already a process group leader.
CONFORMING TO
SVr4, POSIX.1-2001.
NOTES
A child created via fork(2) inherits its parent's session ID. The session ID is preserved across an execve(2).
A process group leader is a process with process group ID equal to its PID. In order to be sure that setsid() will succeed, fork(2) and
_exit(2), and have the child do setsid().
SEE ALSO getsid(2), setpgid(2), setpgrp(2), tcgetsid(3), credentials(7)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2008-12-03 SETSID(2)