Programming :: Execute The String That Sed Actually Outputs?
Aug 2, 2010I've been able to get the right output that I need from sed, but how can I execute the string that sed actually outputs?
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Debian Programming :: Script To Execute String From Text File
Sep 24, 2014I am having trouble writing a script that monitors a text file. When the file contains number 1 (or any other string that is not a command) it does nothing, but when it is something different from 1, it executes that command.
So, there are 2 files: monitor.mon - this is the file that will be checked constanlty; and test.sh - the script that does the job. The monitor.mon file will have its content modified by php. This means a web page will have a form where I input commands and writes does commands in the file. Test.sh will watch when the file's content changes from character 1 to a command, execute that command and write back a 1 so it will not execute it more times.
I tried combining while and if but with no success. Tried reading the file with cat and grep -e but it doesn't seem to recognize when content changes.
Programming :: Copy String A To String B And Change String B With Toupper() And Count The Chars?
Oct 22, 2010copy string a to string b and change string b with toupper() and count the chars
View 3 Replies View RelatedProgramming :: Pthread - Take String From The Command Line And Creates A Thread To Print The String
May 3, 2011I've been trying to understand pthread in C a little better. So I made a simple program that takes in a string from the command line and creates a thread to print the string. I've looked online and copied the basic concepts but there are something things I'm confused about. The programs works just fine, but I have questions. Here's what I have so far.
[Code]....
One thing I'd like to know is why the 3rd argument in the pthread_create function which is my SendMessage function needs to be typecasted to a void pointer and then send the address of the function. Also as for the 4th argument, I would see typecasting to void pointer in some of the pthread examples I saw online, but in my case I'm passing a char pointer, would this be correct? In which case would I ever want to pass a void pointer?
Do I need a pthread_exit(NULL) in my main and in the SendMessage function? If so, why? I added the sleep() function so that I could let the pthread_exit function in my SendMessage function execute first. I simply saw that the online examples on pthread had pthread_exit() in both locations.
Programming :: Using Sed Replace Line Containing Particular String By A Single String?
Oct 16, 2010I have a set of lines as ahown below:
Leon went to school
Leon came back from school..
Leon had dinner...
I have to replace the line containing "dinner" by a single string LUNCH...
Programming :: Creates String Suffixes Out Of A Reference String?
Feb 25, 2011I need to creates string suffixes out of a Reference string. for eg. suffixes of abcdefg will be
1)bcdefg
2)cdefg
3)defg
and so on...
create an array of pointers to point to the first few characters and then use that pointer to print the rest of the string.But when i print using the pointer i get GARBAGE values! shudn't std::cout<<ptr[w] print the string following the char it is pointing to? why do i get garbage values?
Programming :: C - Put A Specific Arbitrary Part Of A String Into It's Own String?
Apr 18, 2010So if I'm given a location of a file like:
How can I just take the type of the file at the end? I know I can use strrchr() for a period to get the pointer to the period just before file type. Is there a build in string function that will just take the rest of the string from a certain point on forward in the string? I know it wouldn't be much work to make it myself, but I figured I would find out if it already existed before doing it.
Programming :: Convert String To Integer Back To String C++ ?
Mar 13, 2010Code:
The error is:
Code:
What I want to do is take input of ip4 as a string, convert it to an integer to add 1 to it, then reconvert it back to a string. Its not working.
My full code is:
Code:
Programming :: Catch Some Outputs In Two Different Log Files In Bash?
Jan 26, 2009I want to catch some outputs in two different log files in bash, file simple.log and all.log So far, the script is started like this:
Code:
xterm -e "(./myscript.sh | tee -a simple.log) >& all.log"
What I want is:
- In simple.log, I want all the stdout but WITHOUT errors.
- In all.log I want BOTH stdout and stderr.
So all is ok, and the output becomes:
all.log
Code:
starting copying files
mv: cannot move ... : permission denied
copying completed
simple log
Code:
starting copying files
copying completed
But, in the new xterm, I'm loosing stdout. There is no output.How can I have the files logged as they are but also have the stdout in the xterm.
Programming :: Shell Script - Which Should Diff Between PS Outputs
Feb 16, 2010I would like to make a one-liner, which diff's "ps aux" output before and after killing a process. So basically it should be a combination of fallowing commands:
1) diff -u
2) ps aux | awk '{print $2}'
3) kill `ps aux | grep [c]ron | awk '{print $2}'`
4) ps aux | awk '{print $2}'
How to achieve this? Something like this:
Code:
diff $( kill `ps aux | grep [c]ron | awk '{print $2}'` && ps aux | awk '{print $2}' ) $( ps aux | awk '{print $2}' )
I don't have pgrep or pkill available.
Programming :: Compare Two Md5sum Outputs To See If The Files Match?
Nov 5, 2010I would like to compare two md5sum outputs to see if the files match. in my script I have
Code:
ORG_FILE="/path/to/org/file.zip"
NEW_FILE="path/to/new/file.zip"
MD5_ORIG=$(md5sum -b "$ORG_FILE")
[code]....
How do I get just the MD5 hash and not the */.... stuff so I can compare them. i tried Code: JUST_HASH=${$MD5_ORIG:0:32} but All I get is
dir_mon_notify.sh: line 79: ${$MD5_ORIG:0:32}: bad substitution
Programming :: PHP Outputs Metadata Or File Information At The Top Of Its Output
Sep 10, 2010Consider this PHP Script or just skip to the Output:
Code
Code:
-bash-2.05b# cat myDate.php
#!/usr/bin/php -q
<?php
[code]....
Programming :: Assigning Custom String To Std::string In C++?
Oct 12, 2009I've been given a custom-made string class which handles string, wstring and bstr. It has a number of methods and assignment operators to convert to and from different types. The app I work on compiles happily in VS6 and VS2008, but when trying to compile in Redhat (version 4.1.1 in Redhat 5.0)
[code]....
Programming :: How To Check If All Letters Of One String Are In Another String?
Nov 11, 2010I have the following two type of strings1: A/D2: A/C/DI am trying to write a subroutine to check whether all of the letters in string 1 appears in string 2. If yes, return true. If not, return false. In the above example, all the letters (A and D) in string 1 are also present in string 2, so I return true.
View 4 Replies View RelatedProgramming :: Pasting Multiple Cut Outputs To A Tab Delimited Output File?
Sep 4, 2010I have a requirement like this:Cut the characters from each line of a file with following positions: 21-24, 25-34 ,111-120.Thse fields now need to be placed in a tab delimited output file.Currently this is how I am achieving it:
#!/bin/sh
cat newsmaple.txt | cut -c 21-24 > out1.txt
cat newsmaple.txt | cut -c 25-34 >out2.txt
[code]....
Programming :: Requesting Shell Script That Only Outputs Directories That Contain Subdirectories?
Jan 7, 2010I have a directory that has about 5,000+ folders in it and I'd like to run a script that outputs any directory that contains a subdirectory.
View 4 Replies View RelatedProgramming :: Convert The Int To A String Using Stringstream Then Convert The String To A Char?
Mar 26, 2011Do I have the convert the int to a string using stringstream then convert the string to a char? or is there a more direct way?Also is there a way to tell the length of a int?
View 5 Replies View RelatedProgramming :: Socket And Timer Programming - Server Doesn't Execute Any Msg Which Client Sent
May 16, 2011i have a server program which accept multiple client connection and am using polling. like every 2 secs it will look to client whether any data is received after it binded. i have used setitimer but there is runtime error i got.. the server accept all client connection but doesn't execute any msg which client sent.
#include<stdio.h>
#include<stdlib.h>
#include<sys/socket.h>
#include<sys/types.h>
#include<netdb.h>
#include<unistd.h>
#include<pthread.h>
#include<string.h>
[Code]....
Programming :: Serial Port Programming String?
Nov 24, 2010I have a serial port program which is reading a string .if(read(readfd,sResult,1)>0)where sResult is unsigned char sResult[10];if sResult is array of 10 then iam getting string perfectly but if iam making sResult only as unsigned char I am getting NULL value CODE BELOW
Code:
unsigned char sResult;
main()
{
readfd = open("/dev/ttyUSB0", O_RDONLY);
if (readfd == -1)
{
perror("READ: open_port: Unable to open /dev/ttyUSB0-
[Code]...
Programming :: Getting Substring Of The String?
Sep 13, 2010I want normal substring of a string that actually is a url as follows
SITEURL/main.php?page=122&type=download_file&fileID=9&user Id=user1&org=org1&mainmenu=main1&submenu=sub1
What I want is a substring like below
org1_user1_main1_sub1
Programming :: Which Effect Does $ Before String Have?
Dec 8, 2010Which effect does the $ before the string have? This $ before a double-quoted string is used in many initscripts on Fedora 13, but not on Ubuntu 8.04.
View 2 Replies View RelatedProgramming :: Append To String In Awk?
Sep 20, 2009I'm having problems completing my school exercises with awk.
Heres the desired outcome:
Code:
./my_awk 2
ACG GAG ATT AGG AGG ATC CCA CCA
CAC AGG ACG GAG ATT AGG AGG ATC
So it generates data in group of threes, 8 groups per row and prints it. My problem is that I can't seem to get awk to append stuff to string so I could print it nicely to screen. It just prints empty lines per the parameter given to it.
Heres my code so far:
Code:
#!/bin/sh
awk -v rows=$1 '
BEGIN {
[code]....
Programming :: Convert String To Int ?
Jul 6, 2010Iam trying to check a value less than or equals 0.The value iam getting is after doing grep a file . but its throwing error .
Code:
When i execute this it throws
Code:
Programming :: Extract Value From String?
Dec 27, 2008I need to extract a price from a string, this may vary in the future so it may be 12.99 or 14.99. i thought a sed command might crack it and i need to write to a file:<td><b class="priceLarge">?6.99</b>I need to extract the price 6.99(with no ?)so extract anyhting between "> and </B> and write it to a file such as tmp1.txt .
View 1 Replies View RelatedProgramming :: Get Value In Character String?
Oct 23, 2010i am compiling the following program in linux. it's in c language. after the compilation with gcc when i run the executable file. it asks for input. but when i enter a name. i prints "Segmentation fault" and then terminate the program. can you please help me.
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
[code]....
Programming :: Grep Not Getting Whole String?
Aug 23, 2010I am trying to monitor how long an ldap search takes and maybe notify or something that a search takes longer than say 10 seconds.
Code:
tail -n 1000 /var/log/ldap.log
for SRCH in $( cat monitorldap.log |grep 'SRCH'); do
echo search string is
echo $SRCH
[Code]....
ok, so to start off with it doesn't appear to get the whole line, just a piece "Aug". How can I get the whole line into a variable so I can then cut it up into the pieces I need?
Programming :: Getting String Value From Array?
Oct 29, 2009I've got a problem...
a[0] = 22
echo $[a[0]]
echoes 22 - that works fine
[code]...
Programming :: Put String On Top Of Text?
Jul 28, 2010I want to create a script wherein it will put a string somewhere on the text file. I tried to create a script using redirect ">" and then put it on top of the file.
The text contains code...
Programming :: Replacing String Using Awk?
Jan 19, 2010i have a string of information displayed in this way :
Code:
John:king:20:34:60
what i am tring to do is to read in input which is given by the user and change it to the
[code]....
Programming :: Sed (?) Insert String Between 2 Others?
May 21, 2010I have a file like this:
Code:
/opt/local/some/dir/
blablablabiugfyugf
[code]....