Im in a intro to unix class and we have to create a a basic program to look up an argument in a large file.
when no argument is given he wants us to produce a error messgae, well this works but it also produces another error message because my variable now equals nothing.
when ./area 303 is entered it works perfectly but when just ./area is entered i get this error
the second line is my own error message which i want how do i get rid of the first?
Moderator's Comments:
Please use code tags
Last edited by Franklin52; 09-21-2010 at 03:34 AM..
hi
I am writing a bash script that uses dialog to get user input an diplay messages to user. I have a small problem
dialog --inputbox "blabla" 20 50 2> /tmp/output
VAR="'cat /tmp/output'"
mkdir $VAR
the code below requests user for a directory path to be created.
But, if the user uses... (1 Reply)
I'm having problems with bash scripts. If a bash script is called with no arguments, I always get "PHIST=!" as the first argument (i.e. this is what $1 equals). Why? Where does this come from, and how can I fix it? Nothing in the bash man pages refer to this mysterious default argument. (2 Replies)
Crontab:
16 14 * * * /root/bin/./empty_mail.sh >> /root/bin/log.txt
L=`mailq |grep -c frozen`
echo "${NUMMAIL} frozen mail to be removed from the mailq"
#echo "Press Enter to continue"
#read CONTINUE
echo -en "-> "
for i in `mailq | grep frozen | awk '{print $3}'` ; do
exim4 -Mrm $i... (1 Reply)
I have written a script and I get error and I don't understand why.
neededParameters=2
numOfParameters=0
correctNum=0
while getopts "s:l:" opt
do
case "$opt" in
s)
serviceName= $OPTARG #errorline 1
numOfParameters= $numOfParameters + 1
;;
l)
... (12 Replies)
hi to everyone :)
i am new to linux and bash and i am trying to build a bash script, that is quite similar to the well known cmd 'split' ... ;)
it is now already "working" ... i can use it like:
./splitfix.sh -v -s 10 foo
./splitfix.sh -s 10 -v foo
./splitfix.sh -s 10 foo
./splitfix.sh -v... (5 Replies)
When it comes to programing and UNIX, I know just enough to be really really dangerous.
I have written a python script to parse through a file that contains ~1 million lines. Depending on whether a certain string is matched, the line is copied into a particular file. For the sake of brevity,... (4 Replies)
Hi guys!
I'm new to the forum and to the Bash coding scene.
I have the following code
paths=/test/a
paths=/test/b
keywords=\"*car*\"
keywords=\"*food*\"
for file in `find paths -type f -ctime -1 -name keywords -print 2>/dev/null`
do
#.... do stuff here for every $file found... (5 Replies)
Hi,
Below is my bash script:
cat run_all.sh
if && ; then
Number_Count_Program $1.results $2.results > $1.$2.counts
else
Number_Split_Program $1.results $2.results > $1.$2.split
fi
After I run the following command:
./run_all.sh A B
./run_all.sh: line 1:
Anybody advice to edit... (5 Replies)
I am trying to write a Bash Script using a couple of arrays. I need to perform a countdown of sorts on an array done once daily, but each day would start with the numbers from the previous day. This is what I'm starting with :
#!/bin/bash
days=(9 8 7 6 5)
for (( i = 0 ; i < ${#days} ; i++... (4 Replies)
Discussion started by: cogiz
4 Replies
LEARN ABOUT DEBIAN
rbash
RBASH(1) General Commands Manual RBASH(1)NAME
rbash - restricted bash, see bash(1)RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO bash(1)GNU Bash-4.0 2004 Apr 20 RBASH(1)