I'm having a strange problem with basic
output redirection to a simple log file in csh. When I run this particular output redirection on the command line, it works, but then when I run the same output redirection command
in my c shell script, I get a blank log file. Nothing is output to the screen, either.
It gets even stranger because the
output redirection works within my c shell script on Redhat Linux but not when I run my c shell script on my current operating system, CentOS V. 2.16.0 release 5.8.
Is there some system variable that needs to be set in CentOS V. 2.16.0 release 5.8, or why does
work in *every other situation* (both command line and running in my c shell script on some computers) except when running my csh script on CentOS V. 2.16.0 release 5.8? It should work the same within the cshell script on all computers, shouldn't it? And does anyone have a work-around that will successfully output to a log file in a csh script on CentOS V. 2.16.0 release 5.8?
EDIT: I was thinking maybe some system variable in CentOS V. 2.16.0 release 5.8 is buffering output from csh? I have no idea, though.
Man pages....look at the man pages. If you don't have them, you can find them on-line. Read them when you have nothing better to do. Find new commands and new ways of doing things.
The answer:
The only way to direct the standard output and standard
error separately is by invoking... (0 Replies)
Hi everyone,
Simple scripting question here. I have:
#!/bin/csh
if ( -e $HOME/*.core) then
rm -f $HOME/*.core >& /dev/null
else
echo "No core files to delete."
endif
But I keep getting the /home/user/*.core: no match
dialog. How can I suppress this? or, why is... (0 Replies)
Here is my script
#!/bin/bash
pwd
cd /var/lib/pgsql
Both "pwd" and "cd" are not executed is there any other way i can change the current working directory to /var/lib/pgsql pls help! (9 Replies)
Portion of my script below :
if ; then
NUMBEROFFEILDS=`cat ${BASE_SCRIPT_LOC}/standardfilecleanup.lst|grep -w ${db_file_path}|awk -F: '{print NF}'`
COUNT=4
while ; do
awk_var="$"`echo $COUNT`
file_name1=`cat ${BASE_SCRIPT_LOC}/standardfilecleanup.lst|grep -w... (1 Reply)
I am using perl to perform a search and replace. It works at the command line, but not in the csh shell script
perl -pi -e 's@/Pattern@@g' $path/$file
I used the @ as my delimiter because the pattern contains "/" (3 Replies)
I have a csh script which I am using to run a program
set data = $argv
set inmod = $argv
set nxz = $argv
# Remove the file extension .pmod
set data = ` echo $data | awk 'BEGIN { FS=".dat" } { print $1 }' `
set inmod = ` echo $inmod | awk 'BEGIN { FS=".vmod" } { print... (8 Replies)
I need to count the number of lines in a .txt file and put it in a variable.
I am using the following code
#!/bin/bash
count = $(wc -l "some file.txt" | awk '{print$1}')
echo $count
It is giving the following error.
line3: count: command not foundWhat am I doing wrong here? :confused: (7 Replies)
I have a simple script which will send a curl request and redirect the output to a log file.
for i in {1..20}
do
curl google.com -is >>log.log &
echo "request # $i" >> log.log
doneAfter it completes the execution, if I run the following command I should see 20 lines because I am printing... (4 Replies)
i have strange behavior i have csh file that run java process something like this :
run_server.csh
#!/usr/bin/tcsh
java -Dtest=testparam -cp ${TEST}/lib/device.jar:${TEST}/conf:${TEST}/lib/commons-logging-1.1.1.jar com.device.server
when i run it like this :... (7 Replies)
Discussion started by: umen
7 Replies
LEARN ABOUT CENTOS
script
SCRIPT(1) User Commands SCRIPT(1)NAME
script - make typescript of terminal session
SYNOPSIS
script [options] [file]
DESCRIPTION
script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive
session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file type-
script.
OPTIONS -a, --append
Append the output to file or typescript, retaining the prior contents.
-c, --command command
Run the command rather than an interactive shell. This makes it easy for a script to capture the output of a program that behaves
differently when its stdout is not a tty.
-e, --return
Return the exit code of the child process. Uses the same format as bash termination on signal termination exit code is 128+n.
-f, --flush
Flush output after each write. This is nice for telecooperation: one person does `mkfifo foo; script -f foo', and another can
supervise real-time what is being done using `cat foo'.
--force
Allow the default output destination, i.e. the typescript file, to be a hard or symbolic link. The command will follow a symbolic
link.
-q, --quiet
Be quiet.
-t, --timing[=file]
Output timing data to standard error, or to file when given. This data contains two fields, separated by a space. The first field
indicates how much time elapsed since the previous output. The second field indicates how many characters were output this time.
This information can be used to replay typescripts with realistic typing and output delays.
-V, --version
Output version information and exit.
-h, --help
Output help and exit.
NOTES
The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is
not set) for the C-shell, csh(1)).
Certain interactive commands, such as vi(1), create garbage in the typescript file. Script works best with commands that do not manipulate
the screen, the results are meant to emulate a hardcopy terminal.
ENVIRONMENT
The following environment variable is utilized by script:
SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed.
(Most shells set this variable automatically).
SEE ALSO csh(1) (for the history mechanism), scriptreplay(1).
HISTORY
The script command appeared in 3.0BSD.
BUGS
Script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
AVAILABILITY
The script command is part of the util-linux package and is available from Linux Kernel Archive <ftp://ftp.kernel.org/pub/linux/utils/util-
linux/>.
util-linux September 2011 SCRIPT(1)