Hi, I have meaning to include an if condition statement in my code to check the directory for existing output files and if its existing i want the program to delete it before doing the succeeding command. i just dont know the correct syntax for it. thanks much guys, this forum has indeed been very helpful,
How can I use a variable that has the conditions for the if statement stored in it?
my test script
condition=" || || "
if "$condition"
then echo "true"
else echo "false"
fi
output
$ ./test2.sh
./test2.sh: line 3: || || : command not found
false (2 Replies)
Hi All,
I am trying to check if two variables have value assigned to it.
i am doing it like
if ]
then
echo "Please specify either single hostname or host file for the report"
usage
exit
fi
But its not working for it.Even i specify values for both variables it dont go... (6 Replies)
Urgent help with bash scripting
1- i am using grep to find a string called: tinker panic 0 in a file /etc/ntp.conf
if the string is not there, i want to add the strings in /etc/ntp.conf file in the first line of the file. if not do nothing or exit.
2- also i want to add # in front of the... (2 Replies)
I want to check (using bash condition test function) if string contains three spaces, ignoring last three spaces at the end of string.
string_to_report='foo bar foo bar '
string_to_ignore='foo bar ' (8 Replies)
In the below I can not seem to add a line that will add Not low if the statement in bold is not true or meet. I guess when the first if statement is true/meet then print low, otherwise print Not low in $(NF + 1). I am not sure how to correctly add this. Thank you :).
if(low <= $2 && $2 <=... (5 Replies)
Hi,
I need to perform the untar and rm operation if the file found is a .tar and does not have test.tar or hello.tar as the file names.
Below is the loop to check the same.
for tf in *.tar
do if ]
then found=1
... (1 Reply)
I wrote a code to find codons in a DNA string. The only problem I have is how do I make the code only work for a file with DNA. This means the file only has the characters a,c,g,t and no white space characters. (3 Replies)
I want get from user and pass these parameters to bash script. script should copy files in user home directory.
FYI: each file might be exist or not, might be one of them exist or four of them.
Here is my script, it always copy file1 and seems only one of them execute!
#!/bin/bash
for... (6 Replies)
Hi.
I wrote this small bash script, i want to compare second column from file1 with file2 if a pattern matches. Files are small and I am sure that pattern occurs only once. I think this can be rewritten into a awk one liner. Appreciate if someone could give me idea. Whole NR FNR confuse me :o
... (6 Replies)
Discussion started by: ctrld
6 Replies
LEARN ABOUT OSF1
rmtrashcan
mktrashcan(1) General Commands Manual mktrashcan(1)NAME
mktrashcan, rmtrashcan, shtrashcan - Attaches, detaches, or shows a trashcan directory
SYNOPSIS
/usr/sbin/mktrashcan trashcan directory...
/usr/sbin/rmtrashcan directory...
/usr/sbin/shtrashcan directory...
OPERANDS
Specifies the directory that contains files that were deleted from attached directories. Whenever you delete a file in the specified
directory, the file system automatically moves the file to the trashcan directory. Specifies the directory that you attach to a trashcan
directory.
DESCRIPTION
The trashcan utilities (mktrashcan and rmtrashcan) enable you to attach or detach an existing directory, which you specify as a trashcan
directory, to any number of directories within the same fileset.
A trashcan directory stores the files that are deleted with the unlink system call. For instance, you can use the mktrashcan utility to
attach a trashcan directory called /usr/trashcan to one or more directories; thereafter, when you delete a file from one of the attached
directories, the file system moves the file to the /usr/trashcan directory. Note that when more than one directory shares attachment to a
trashcan directory, files with the same file name can overwrite each other in the trashcan directory.
If you mistakenly delete a file, use the mv command to return the file from the /usr/trashcan directory to its original directory.
When you enter shtrashcan at the system prompt, the system shows the trashcan directory, if one exists, for the directory you specified.
It is important that trashcan directories have correct access permissions. If the permissions are too restrictive, then it may be impossi-
ble to remove files from the directories that are attached to the trashcan directory. In general, all users and groups that expect to use
the trashcan directory need write permission to the directory. If unexpected "permission denied" errors occur when deleting files that are
in a directory attached to a trashcan directory, use the chmod command to change the permissions on the trashcan directory.
RESTRICTIONS
The directory and trashcan directories must be in the same fileset; however, you can attach the trashcan directory to any directory within
the fileset.
EXAMPLES
The following example creates and attaches a trashcan directory, /usr/trashcan, to two directories, /usr/ray and /usr/projects/sql/test,
which are in the same fileset. The chmod command adds write permission for all users and groups on the new trashcan directory. % mkdir
/usr/trashcan % chmod a+w /usr/trashcan % mktrashcan /usr/trashcan /usr/ray /usr/projects/sql/test To attach the trashcan directory,
/usr/trashcan, to all subdirectories in the /usr directory, enter: % mktrashcan /usr/trashcan /usr/*
New subdirectories that you add beneath the /usr directory are not attached to the trashcan directory until you attach them. Also,
the mktrashcan utility distinguishes between directories and files, attaching only directories to the trashcan directory.
Note that an attached directory produces an EDUPLICATE_DIRS (-1165) error when /usr/trashcan is itself in the directory path you
attach to (as in the previous example). You can ignore this error message.
SEE ALSO advfs(4), mkfset(8), showfsets(8)mktrashcan(1)
12-21-2011
