09-28-2014
Thanks. It works perfectly. I spent some time trying to figure out the problem, now I understand that it was related to 'FNR=NR'. Thanks again.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello, I am new to scripting and need some help. In looking at other posts on this forum, I came up with the following logic. I cannot figure out why I am getting names of files of the current directory in my echo output.
Scenario: message file has a line containing the version. Version.txt... (2 Replies)
Discussion started by: brdholman
2 Replies
2. Shell Programming and Scripting
Dear All,
Is it possible to compare 2 files line to line using column values?
for example I have file1:
1;givi;01012000;wer
2;sss;02012000;rrr
3;ccc;03012000;ttt
file 2:
0;uuu;01012000;lll
1;givi;01012000;wer
2;sss;02012000;rrr
3;ccc;03012000;ttt
5;givi;01012000;hhh
I want... (4 Replies)
Discussion started by: giviut
4 Replies
3. Shell Programming and Scripting
I have two files and need to compare the two files and to remove the matching lines from both the files (4 Replies)
Discussion started by: shellscripter
4 Replies
4. Shell Programming and Scripting
I have two files like this:
#FILE 1
ABCD 4322 26485
JMTJ 5311 97248
XMPJ 4321 58978
#FILE 2
ABCD 4321 26485
JMTJ 5311 97248
XMPJ 4321 68978
What to do: Compare the two files and find those lines that doesn't match. And have a new file like this:
#FILE 3
"from file 1"
ABCD 4322 26485... (11 Replies)
Discussion started by: kingpeejay
11 Replies
5. Shell Programming and Scripting
Hi everyone
I have a dilemma and I'm hoping someone has an answer for me.
I have two files:
# cat masterfile
line3
line4
line5
line6
line7
# cat tempfile
line1
line2
line3
line4
I want to compare tempfile with masterfile. (3 Replies)
Discussion started by: soliberus
3 Replies
6. Shell Programming and Scripting
Hi Guys,
I want to find any differences between packages installed on 2 servers/zones.
I have 2 files that contain the output from pkginfo -x . I want to know if any packages exist only in one file and I want to also know about any packages that exist in both but with a different version.
ie:... (8 Replies)
Discussion started by: Tornado
8 Replies
7. Shell Programming and Scripting
Inspired by the extremely short awk code from Ygor on this post I wanted to compare two files on only one field. I can't get it to work. Can anybody help on explaining the code and fix the code?
My code which does not work:
awk 'BEGIN{a=1};a!=1' file1.txt file2.txt >outfile.txt
file1.txt... (1 Reply)
Discussion started by: sdf
1 Replies
8. UNIX for Dummies Questions & Answers
I have 2 files with exactly the same information (with header and separated by ";") and what I would like to do is print (for both files!) the columns that are different and also print the "key" column that is equal in the 2 files For example, if
File1:
key1;aaa;bbb;ccc
key2;ddd;eee;fff... (4 Replies)
Discussion started by: mvalonso
4 Replies
9. Shell Programming and Scripting
I have two files
I need to compare these two files and take the lines that are common in both the files and consider the line present in second file for my further processing
I have used "Awk" along with "FNR and NR" but that is not working
gawk -F= '
> FNR==NR {a=$1; next};
> ... (2 Replies)
Discussion started by: Priya Amaresh
2 Replies
10. Shell Programming and Scripting
I am having a two files and different days, and this is example:
file1: 06.09.2017.
abcd
123
file2: 07.09.2017.
abcd
1234
So what I want is that file2 with today's date contains only 1234, so where is a problem you would ask?
Problem is here that I put these commands into routers,. and... (3 Replies)
Discussion started by: tomislav91
3 Replies
LEARN ABOUT PHP
restart_syscall
RESTART_SYSCALL(2) Linux Programmer's Manual RESTART_SYSCALL(2)
NAME
restart_syscall - restart a system call after interruption by a stop signal
SYNOPSIS
int restart_syscall(void);
Note: There is no glibc wrapper for this system call; see NOTES.
DESCRIPTION
The restart_syscall() system call is used to restart certain system calls after a process that was stopped by a signal (e.g., SIGSTOP or
SIGTSTP) is later resumed after receiving a SIGCONT signal. This system call is designed only for internal use by the kernel.
restart_syscall() is used for restarting only those system calls that, when restarted, should adjust their time-related parameters--namely
poll(2) (since Linux 2.6.24), nanosleep(2) (since Linux 2.6), clock_nanosleep(2) (since Linux 2.6), and futex(2), when employed with the
FUTEX_WAIT (since Linux 2.6.22) and FUTEX_WAIT_BITSET (since Linux 2.6.31) operations. restart_syscall() restarts the interrupted system
call with a time argument that is suitably adjusted to account for the time that has already elapsed (including the time where the process
was stopped by a signal). Without the restart_syscall() mechanism, restarting these system calls would not correctly deduct the already
elapsed time when the process continued execution.
RETURN VALUE
The return value of restart_syscall() is the return value of whatever system call is being restarted.
ERRORS
errno is set as per the errors for whatever system call is being restarted by restart_syscall().
VERSIONS
The restart_syscall() system call is present since Linux 2.6.
CONFORMING TO
This system call is Linux-specific.
NOTES
There is no glibc wrapper for this system call, because it is intended for use only by the kernel and should never be called by applica-
tions.
The kernel uses restart_syscall() to ensure that when a system call is restarted after a process has been stopped by a signal and then
resumed by SIGCONT, then the time that the process spent in the stopped state is counted against the timeout interval specified in the
original system call. In the case of system calls that take a timeout argument and automatically restart after a stop signal plus SIGCONT,
but which do not have the restart_syscall() mechanism built in, then, after the process resumes execution, the time that the process spent
in the stop state is not counted against the timeout value. Notable examples of system calls that suffer this problem are ppoll(2),
select(2), and pselect(2).
From user space, the operation of restart_syscall() is largely invisible: to the process that made the system call that is restarted, it
appears as though that system call executed and returned in the usual fashion.
SEE ALSO
sigaction(2), sigreturn(2), signal(7)
COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
Linux 2017-09-15 RESTART_SYSCALL(2)