10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I am struck up with a problem and that is with output redirection.
I used all the ways for the redirection of the output of c binary to a file, still it is failing.
Here are the different ways which I have used:
./a.out | tee -a /root/tmp.txt 2>&1
./a.out | tee -a /root/tmp.txt 1>&1
./a.out |... (2 Replies)
Discussion started by: Maya29988
2 Replies
2. Shell Programming and Scripting
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)
Discussion started by: haritha.gorijav
7 Replies
3. UNIX and Linux Applications
Dear All,
./waf --run scratch/myfirst > log.out 2>&1
The above is a command line to redirect the output to a file called log.out.
what is the 2>&1 part for ?
Thank you (2 Replies)
Discussion started by: knowledgeSeeker
2 Replies
4. Shell Programming and Scripting
So I have a existing file that I used the uniq command on and I need to save the output to the same file without changing the file name.
I have tried $ uniq filename > filename
then when I cat the file it then becomes blank like there is nothing inside.
any help would be much appreciated... (0 Replies)
Discussion started by: drew211
0 Replies
5. Shell Programming and Scripting
I am using tar command to append daily database backups on tape. "tar --append " command help me to do this.
But tar --append command does not produce any output on stdout if it succeed.
I want the output for that appended command to a log file.
This log file should contain only the name of the... (0 Replies)
Discussion started by: pganguly46
0 Replies
6. Shell Programming and Scripting
I have a system stat command running which generates data after 5 sec or so. I pass this data to awk and do some calculation to present the data differently. Once done now I want to pass this data to file as and when generated but doesn't work..unless the first command completes successfully.... (6 Replies)
Discussion started by: learnscript
6 Replies
7. UNIX for Dummies Questions & Answers
I am trying to write a script which will output notifications to a logfile, but I would like to cap the logfile to, let's say, 200 lines.
Specifically I am using custom firmware, DD-wrt, on my router and I am implementing a script to connect to my work vpn. I have a loop that pings a computer... (2 Replies)
Discussion started by: joemommasfat
2 Replies
8. UNIX for Dummies Questions & Answers
Suppose I have a file named a
When I write
cat a>a
The following error message is displayed
cat: a: input file is output file
and my file a is truncated to zero size.
Also the exit status of the last command is 1
Can someone tell me what actually happens when I do so? (1 Reply)
Discussion started by: aagajaba
1 Replies
9. Shell Programming and Scripting
Hi,
I want ssh to the remote server and then execute ls and redirect the output to the file in remote server itself
like
ssh root@$server `ls /var/log/users.txt > root@$server:/home/users.txt`
Can you please let me know the correct syntax for it.
Thanks in advance (2 Replies)
Discussion started by: mohitmoudgil
2 Replies
10. UNIX for Dummies Questions & Answers
Apologies for the trivial nature of this question but I cannot seem to get a simple re direct to a log file to work
Step 1
touch log.txt
at -f batch.sh now >> log.txt
I am trying to get the batch.sh contents into the log file
Manny Thanks (8 Replies)
Discussion started by: JohnCrump
8 Replies