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bash error checking problems[solved]
Post 302714165 by kevin298 on Thursday 11th of October 2012 11:28:42 PM
10-12-2012
bash error checking problems[solved]
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data: I am trying to make a script called showtime that displays the current time for a given city.
The problem is on the error checking part im trying to make the script search a directory called zoneinfo to see if the region or city the user entered exist.
2. Relevant commands, code, scripts, algorithms:
# Declear Varables
region=$1
city=$2
#Checking if region exist in the database
region=$(ls ~/zoneinfo| grep '$1')
3. The attempts at a solution (include all code and scripts):
# Declear Varables
region=$1
city=$2
#Checking if region exist in the database
region=$(ls ~/zoneinfo| grep '$1')
if [ '$1' == "" ]; then
echo $1 does not exist
exit 2
fi
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):Seneca College professor name John selmy/course name OPS 435
your website wont let me post the url to the courses sit for some reason??
Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
1. The problem statement, all variables and given/known data: I am trying to make a script called showtime that displays the current time for a given city.
The problem is on the error checking part im trying to make the script search a directory called zoneinfo to see if the region or city the user entered exist.
2. Relevant commands, code, scripts, algorithms:
# Declear Varables
region=$1
city=$2
#Checking if region exist in the database
region=$(ls ~/zoneinfo| grep '$1')
3. The attempts at a solution (include all code and scripts):
# Declear Varables
region=$1
city=$2
#Checking if region exist in the database
region=$(ls ~/zoneinfo| grep '$1')
if [ '$1' == "" ]; then
echo $1 does not exist
exit 2
fi
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):Seneca College professor name John selmy/course name OPS 435
your website wont let me post the url to the courses sit for some reason??
Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
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Last edited by vbe; 10-12-2012 at 06:03 AM..
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LEARN ABOUT DEBIAN
xvgetvideo
XvGetVideo(3) libXv Functions XvGetVideo(3) NAME
XvGetVideo - capture video from a drawable SYNOPSIS
#include <X11/extensions/Xvlib.h> int XvGetVideo(Display *dpy, XvPortID port, Drawable d, GC gc, int vx, int vy, unsigned int vw, unsigned int vh, int dx, int dy, unsigned int dw, unsigned int dh); ARGUMENTS
dpy Specifies the connection to the X server. port Defines the port to which video output is sent. d Defines the drawable (window) from which video output is to be obtained. gc Defines the graphical context. GC components are: subwindow-mode, clip-x-origin, clip-y-origin, and clip-mask. vx,vy,vw,vh Define the location and size of the video region is to be written. vx and vy define the xand y coordinates of the upper- left corner of the video region; vwand vh define the width and height, in pixels, of the video region. dx,dy,dw,dh Define the location of the source drawable from which the video image is to be taken. dxand dy define the xand y coordi- nates of the upper-left corner of the drawable region; dwand dh define the width and height, in pixels, of the drawable region. DESCRIPTION
outputs video from a drawable. The position and size of the destination rectangle is specified by vx, vy, vw, and vh. The position and size of the source rectangle is specified by dx, dy, dw, and dh. Drawable data is clipped to the bounds of the drawable, scaled to the requested video region size (or the closest size supported) and clipped to the bounds of the video encoding. The contents of any region not updated with drawable data is undefined. If video is successfully initiated, an XvVideoNotify event with detail XvStarted is generated for the drawable. If the port is already in use, its video is preempted, and if the new drawable is different than the old, an XvVideoNotify event with detail XvPreempted is generated for the old drawable. If the port is grabbed by another client, this request is ignored, and an XvVideoNotify event with detail XvBusy is generated for the drawable. RETURN VALUES
[Success] Returned if XvGetVideo(3) completed successfully. [XvBadExtension] Returned if the Xv extension is unavailable. [XvBadAlloc] Returned if XvGetVideo(3) failed to allocate memory to process the request. DIAGNOSTICS
[XvBadPort] Generated if the requested port does not exist. [BadGC] Generated if the requested graphics context does not exist. [BadDrawable] Generated if the requested drawable does not exist. [BadAlloc] Generated if there were insufficient resources to process the request. SEE ALSO
XvGetStill(3), XvPutVideo(3), XvVideoNotify(3) X Version 11 libXv 1.0.7 XvGetVideo(3)