General :: Shell Script - What Does Dollar Size Mean
Jan 23, 2010I am trying to learn shell scripting. What does the dollar sign mean, and these signs {}
DEST="${DST}`date +%F`/"
I am trying to learn shell scripting. What does the dollar sign mean, and these signs {}
DEST="${DST}`date +%F`/"
I am trying to use Ubuntu terminal to execute unix commands. However, the dollar sign that usually appears in shell terminal is missing. Please see the attached screenshot image showing the terminal without the dollar sign. I cannot run any unix commands like cd, ls-l. Please advise how I could fix this problem.
View 3 Replies View RelatedIn a shell script, I am creating a .tar using this command
Code:
tar -zcvf dst/lib/library.tar.gz dst/lib
There are two problems:
[code]...
When i change the directory using 'cd', the length of my shell prompt keeps on increasing. To make it more clear kindly see below
Code:
$> cd MyWorks
$ Myworks> cd Shell
[code]....
am trying to write a shell script to find the size of a particular log file and if the log size grows, script should mail the changes to the administrator or a any user so script should monitor the log file continuously in a time interval, how can i do that?
I tried with these codes to find the file size but it throws me error says command not found
$s=$( stat -c %s mylogfile.log)
echo $s
how to remove the text prefixing the dollar sign in mac terminal?
For example,
Peters-MacBook-Pro:~ peter$ ls my_dir
should become
$ ls my_dir
I'm trying to setup a linux computer to connect to my works wirless. It uses a WPA2 password with a dollar sign in it. I can't input it into wpa_passphrase because it thinks dollar sign means some command.
How do I tell it that the dollar sign is part of the password?
i have a bunch of ubnt nanostations M series (wireless access points/routers)... they use airOS (a fork of openwrt). it runs a custom firmware that i made using provided sdk. and the lighttpd uses php/fi 2.0.1.... this is (of course) used to serve the web configuration.the problem: i need to use the ($) in a string but i couldn't. what i need to do is download some file from the internet using wget and have the pid of wget back to keep track of the process, then parse the output to the page.
View 5 Replies View RelatedI was using UBUNTU and still do, but I dual boot UBUNTU/Slackware now and my Linux knowledge has increased so much. This forum has been right there with me for the last couple weeks and I was reticent to post a question until a knew I had exhausted the available sources. So here goes.....Can I change the font size of the system shell that begins at startup (with the boot info and stuff). I really like using this shell as user. The thing that would make me nuts for it is if I can make the text a bit smaller. I have a 1920x1200 display and could really take advantage of all of that "real estate." The other posts related to this seem to focus an a broken configuration from the beginning, but my install is SWEET. Can I change this or is it baked into the system?
View 11 Replies View RelatedI have a file that's supposed to be growing in size 24/7. I want to check every 10 minutes via cron that it's actually growing. If not, send an email. Does anyone know how to write a script to do that?
View 3 Replies View RelatedNo Matter what I do and change in gnome-tweak-tool, the window title bar won't change to anything else, won't go smaller, even the downloaded themes won't change the bar, and I cant seem to find the needed codes in xml to change them. photo is attached to illustrate the things I need to changeI need to change their size in the first place, and maybe change them to like ambiance or whatever. i've seen many guides on the net, and It still don't find the neeeded solution
View 1 Replies View Relatedi'm getting messages like these in my bash console
Code: STACK size: 98222 [0x7f665dbe4e00 0x7f665db25090] and i'm not quite sure what they mean, so far it looks it's related to the shell stack limit set by ulimit, however i've tried to change it (increasing it) however this message still persists.
MACHINE: HP Proliant DL260G5OS: SLES 11 SP1kernel: Linux xserver 2.6.32.12-0.7-default #1 SMP 2010-05-20 11:14:20 +0200 x86_64 x86_64 x86_64 GNU/LinuxIt is used as remote xserver in a LAN.I have configured /usr/lib/restricted/bin/.rbashrc with some environment variables but when the users logon in the system finally is executed $HOME/.bashrc and some environment vars are overwritten.
View 2 Replies View RelatedI would like know when it is necessary or advisable to write a shell script instead of shell function ?
View 3 Replies View RelatedI am wondering if I can open a shell or new terminal thing from within the terminal in a unix/linux enviroment. Particularly a commandline only one where there is no GUI. Is this doable? how do I do it?
View 3 Replies View Relateda client brought in an 160GB external HDD and wanted to get the files off it, there appeared to be no partitions on the disk but i thought it may have been formatted to use the whole disk. I tried to mount it as the various FS types the client thought it may have been to no avail.
I ran testdisk on it which told me that it previously had a mac partition table and a 210GB partition on it (which is larger than the disk) could anyone enlighten me as to whether or not this is even possible, and if so how could i retrieve the data?
Ubuntu 10.04, xsane 0.996, Brother MFC 240c scanner.I just finished writing a long dissertation on my problem with this scanning environment (which I will spare you). In a nutshell the resulting image, when printed, is smaller than the original document. In writing my dissertation for this post I determined that the cause of the issue is that xsane believes I am scanning an 8.5 x 14 inch document when I am in fact scanning an 8.5 x 11 letter. So the question is... can I change the size to 8.5 x 11? and if so, how? I have not found anything in the xsane Preferences.
View 7 Replies View Relatedtoday I upgraded via official testing repository Gnome to version 3.18. After this, icons on desktop and nautilus are bigger, than before. Next thing, gaps between icons are smaller than before. I tried change theme to default (Adwaita), then run gtk-update-icon-cache, but without result.
Normal view - icons are big for this view. URL....
Small view - icons are still big for this view. URL...
How can I change icons size and gaps size? Or is it bug for this version?
is lvresize with --resizefs options re-size the Logical Volume and then re-size the file system? i mean we don't need to use resize2fs?I looked at man pages but it doesn't explain this option.
View 3 Replies View RelatedHave just installed Lexmark s605 printer on wireless network, printer works ok but when i print a document even though it is showing the correct size on 'print preview', the printed output is on the page is tiny and and 90deg rotated, I've tried various drivers from the Lexmark website, and also messing about in printer settings but nothing seems to make any difference.
View 3 Replies View RelatedHow can we find the maximum size of the inode table and what decides it, and how the maximum size of volume of file system is decided ?
View 4 Replies View RelatedI want to change my default shell to tcsh. I used
Code:
usermod -s /bin/tcsh username
command as given at url
But if I open a new shell, it is still a bash shell.
How do I make my default shell as tcsh?
I am using ubuntu10.04-server 64bit AMD with fluxbox. After I ran Matlab in a shell (without GUI) the shell does not display characters anymore, but will execute any command, I just can't see the characters that I'm typing.. I use aterm and xterm, does anybody know why that is, am I missing a package?
View 1 Replies View RelatedIs there any way I can switch my desktop shell from unity to, say, gnome-shell? I can switch using other console shell I like (bash, csh, fish, etc.). Assume that there is a stable alternative desktop shell, I should be able to choose, too.
(For console shell, we goes to /etc/passwd. But for desktop, I can't find the way to config.)
Is there a way to export a variable to parent shell in shell scripting ?
View 3 Replies View RelatedI am trying to create a shell script similar to ls, but which only lists directories. I have the first half working (no argument version), but trying to make it accept an argument, I am failing. My logic is sound I think, but I'm missing something on the syntax.
Code:
if [ $# -eq 0 ] ; then
d=`pwd`
for i in * ; do
if test -d $d/$i ; then
echo "$i:"
code....
Is there some type of functional way to read things in the Python shell interpreter similar to less or more in the bash (and other) command line shells?
Example:
Code:
>>> import subprocess
>>> help(subprocess)
...
[pages of stuff to read]
...
I'm hoping so as I hate scrolling and love how less works with simple keystrokes for page-up/page-down/searching etc.
I have a Canoscan LiDE 30 scanner which works fine in Linux. I haven't used it in months, and never since moving from Jaunty x86_64 to Fedora 11 x86_64. This evening I suddenly need to scan two pages to send to someone via e-mail, and the recipient is desperate to receive them. Naturally, Xsane has decided this is the moment to screw me.
The problem: I cannot figure out how to tell Xsane that the page size is 8.5 11. It insists on scanning only the left side, 3.99 x 11. I cannot find a page size anywhere in any of the buttons.
In Preview I once got it to scan the entire page, but could not figure out how to save the image to file. Subsequently I have not been able to figure out how I did it. In any event, scanning from the small main window always scans 3.99 x 11. Adjusting the scan area manually in the Preview window allows me to change the size area in the small main window to 8.5 x 11, but when I then scan from the small main window it reverts to 3.99 x 11.
I have scanned the document a hundred times at least, each time trying different buttons, but nothing has succeeded in getting the full page.
How do you access preferences for changing size of the launcher bar or icon size, etc? I looked through system settings and could not find it.
View 4 Replies View RelatedHow can I get the page size of my PC in Ubuntu? In proc/meminfo it says something of HugePageSize, but that term of Huge? Is that the solution?
View 2 Replies View Related