How can I redirect all stdout and stderr messages from a command to /dev/null (or to a file if need be) except messages that start with the word 'foo'? Messages that start with 'foo' need to be displayed in real time (i.e., when they are sent to stdout/stderr by the command). Thanks. (5 Replies)
Hello!
I have somo problems with simple scripts like this:
#!/bin/bash
echo -n "Enter your name and press : "
read var_name
echo "Your name is: $var_name"
When I try to run it, this error occurs: ':not a valid identifier var_name.
Why?? (I work in cygiwin)
Is there anybody out... (10 Replies)
i write a shell program and i execute that after i made a bin directiry in my home directory(i didnt give any permissions)
now i change to other directory.then i execute it bit it is saying " no such a file or directory"
can any one help me please (2 Replies)
I am having an issue with using cygwin (on Windows XP). My script errors on if -command. The script here works fine on Linux, but cygwin fails...
#!/bin/sh
if then
echo "Test"
fi
The error -message:
./ShellTest.sh: line 4: syntax error near unexpected token `fi'
./ShellTest.sh:... (1 Reply)
hi and sorry for crossposting...
I have data, the first column is the date ("2011 02 03 12 45") and follow I have the measurements . What I would like to do is:
to read the data line by line and write the data of "today" in a new file and "yesterday" as well in another file, separated by... (2 Replies)
Hey all,
Writing a program that searches for a username and if they are online creates a 'beep' and sends the username and date to a log file.
the error i am getting is:
paul.obrien16@aisling:~/os$ bash checklogin
: command not found
Enter username
paul.obrien16
': not a valid... (2 Replies)
Hello,
I am new to shell scripting. I have a question I would greatly appreciate any suggestions on. I am writing a ksh script that will launch bin files. The files are owned root and the application runs under root. The application administrators do not get root access. The script is intended... (1 Reply)
List directories at the home directory in increasing order.
First of all is this correct?
cd ~/
du -h|sort -n|more
First command is to go to the home directory and second does the rest.
Is there a way to do them in single command.
Thanks in advance. (1 Reply)
Hey all,
I would like to ask your help and sorry in advance for my ignorance since I am a complete beginner in this.
I need to create a UNIX script that will:
- scan a small number of folders and subfolders (see a similar file tree in the attachment)
-
- for each final folder (each of... (8 Replies)
Hi,
can someone explain how this aliases work:
alias m 'if ( \!:$ =~ *gz) set status = 1 && most \!:$ || gzcat \!:1 | most '
I mean, I know what it does, but I don't know how
- what is \!:$ and \!:1
- how do it used the && and ||
- what it does with status variable?
thanks (3 Replies)
Discussion started by: tzvikao
3 Replies
LEARN ABOUT NETBSD
pwd
PWD(1) BSD General Commands Manual PWD(1)NAME
pwd -- return working directory name
SYNOPSIS
pwd [-LP]
DESCRIPTION
pwd writes the absolute pathname of the current working directory to the standard output.
The following options are available:
-L If the PWD environment variable is an absolute pathname that contains neither "/./" nor "/../" and references the current directory,
then PWD is assumed to be the name of the current directory.
-P Print the physical path to the current working directory, with symbolic links in the path resolved.
The default for the pwd command is -P.
pwd is usually provided as a shell builtin (which may have a different default).
EXIT STATUS
The pwd utility exits 0 on success, and >0 if an error occurs.
SEE ALSO cd(1), csh(1), ksh(1), sh(1), getcwd(3)STANDARDS
The pwd utility is expected to be conforming to IEEE Std 1003.1 (``POSIX.1''), except that the default is -P not -L.
BUGS
In csh(1) the command dirs is always faster (although it can give a different answer in the rare case that the current directory or a con-
taining directory was moved after the shell descended into it).
pwd -L relies on the file system having unique inode numbers. If this is not true (e.g., on FAT file systems) then pwd -L may fail to detect
that PWD is incorrect.
BSD October 30, 2003 BSD