10 More Discussions You Might Find Interesting
1. Programming
Experts,
I am writing a script and able to write only small piece of code and not able to collect logic to complete this task.
In input file have to look for name like like this (BGL_HSR_901_1AG_A_CR9KTR10) before sh iss neors. Record this (BGL_HSR_901_1AG_A_CR9KTR10) in csv file
Now have to... (0 Replies)
Discussion started by: as7951
0 Replies
2. Shell Programming and Scripting
Hi,
I have a peculiar issue w.r.t redirecting the command output to a file when using loop.
I am redirecting command output to same file in a series of if condition statements, but if one block of if condition statement writes the log to the file , the subsequent block of if condition... (7 Replies)
Discussion started by: ananan
7 Replies
3. Shell Programming and Scripting
Hi all,
I have to write a script which will keep for a particular user (username is first argument) backups of the account area to another.
The script should accept as the second argument is a directory (or file), create one by storing a copy of the argument (using tar) and copies it to the list... (0 Replies)
Discussion started by: peter20
0 Replies
4. Shell Programming and Scripting
Hi All,
I have a file where I am converting newlines to comma separated values but I would like to append zero if the output is empty
Here is the command I am using
sed -n -e 'H;${x;s/\n/,/g;s/^,//;p;}' test1.txt
test1.txt will have comma seperated values but sometimes this file can be... (6 Replies)
Discussion started by: rajeevm
6 Replies
5. Shell Programming and Scripting
Hi all;
I am running a script:/var/tmp/gcsw -ne | grep "State:2" | wc
that gives me output like:80 480 6529
but i need this output as:2013-01-18 13:00 -> 80 480 6529 (1 Reply)
Discussion started by: gc_sw
1 Replies
6. 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
7. UNIX for Dummies Questions & Answers
Hi All,
Please could anyone advise what the purpose of the dot syntax in the following command means:
tar -cvf ${WORKING_BACKUP_ROOT}/${TAR_ARCHIVE_FILE} . >/${BACKUP_ROOT}/${ARCHIVE_LOG}
Many thanks (2 Replies)
Discussion started by: daveu7
2 Replies
8. 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
9. Shell Programming and Scripting
Hi all,
I have a tar file and inside that tar file is a folder with additional tar.gz files. What I want to do is look inside the first tar file and then find the second tar file I'm looking for, look inside that tar.gz file to find a certain directory. I'm encountering issues by trying to... (1 Reply)
Discussion started by: bashnewbee
1 Replies
10. AIX
hello,
can i append files into tape without clear this tape
thanks for help (3 Replies)
Discussion started by: mbakry23
3 Replies
tar(4) Kernel Interfaces Manual tar(4)
NAME
tar - format of tar tape archive
DESCRIPTION
The header structure produced by (see tar(1)) is as follows (the array size defined by the constants is shown on the right):
All characters are represented in ASCII. There is no padding used in the header block; all fields are contiguous.
The fields magic, uname, and gname are null-terminated character strings. The fields name, linkname, and prefix are null-terminated char-
acter strings except when all characters in the array contain non-null characters, including the last character. The version field is two
bytes containing the characters (zero-zero). The typeflag contains a single character. All other fields are leading-zero-filled octal
numbers in ASCII. Each numeric field is terminated by one or more space or null characters.
The name and the prefix fields produce the pathname of the file. The hierarchical relationship of the file is retained by specifying the
pathname as a path prefix, with a slash character and filename as the suffix. If the prefix contains non-null characters, prefix, a slash
character, and name are concatenated without modification or addition of new characters to produce a new pathname. In this manner, path-
names of at most 256 characters can be supported. If a pathname does not fit in the space provided, the format-creating utility notifies
the user of the error, and no attempt is made to store any part of the file, header, or data on the medium.
SEE ALSO
tar(1)
STANDARDS CONFORMANCE
tar(4)