10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have file input.txt:
>TX1-1 Freq 55
cattctgatgaatatttgtcctttagttgttatttgt
>TX1-2 Freq 19
cattctgatgaatatttgtcctttagttgttatttgt
>TX1-3 Freq 17
cattctgatgaatatttgtcctttagttgttatttgt
>TX1-4 Freq 6
cattctgatgaatatttgtcctttagttgttatttgt
>TX1-5 Freq 6
cattctgatgaatatttgtcctttagttgttatttgt
... (5 Replies)
Discussion started by: Xterra
5 Replies
2. UNIX for Dummies Questions & Answers
Hi all,
I want ot print a header with new line in the end. I am using echo
like echo "this is header"
I want output like
This is header
$
I tried -e also but it's not working. echo - e
Can anyone help please? (6 Replies)
Discussion started by: dsa
6 Replies
3. Shell Programming and Scripting
hi all,
i have one shell script like this
#!/bin/bash -xv
ENV_NAME=`cat $IB_HOME_DIR/cfg/ibProfile.sh | grep "RDM_CONN" | cut -f 2 -d "@"`
CURRENT_DIR=`pwd`;
string=$IB_HOME_DIR
string1="$string/FRGFOLDER/input"
#sed "s/string3/$string1" frg_event_src.sql > modifiedinsert.sql
sqlplus... (2 Replies)
Discussion started by: ramsavi
2 Replies
4. Shell Programming and Scripting
Hi All,
I have a directory containing multiple files.
and also a txt file which contains the list of all filenames and certain values.
I want to read the text file line by line and if its 2nd column is matched with the filename in directory, then it must insert the values in 7th column to... (14 Replies)
Discussion started by: CAch
14 Replies
5. Shell Programming and Scripting
Hello All,
I have following file contents
cat file
#line=aaaaaa
#line=bbbbbb
#line=cccccc
#line=dddddd
line=eeeeee
#comment=11111
#comment=22222
#comment=33333
#comment=44444
comment=55555
Testing script
Good Luck!
I would like to comment line line=eeeeee and insert a new line... (19 Replies)
Discussion started by: manishdivs
19 Replies
6. Shell Programming and Scripting
Friends ,
I have a large file and i need to insert a line after every line.I am actually unaware how to do it.Any help appreciated.
My File
control station *ATM* , qread $OSS.Jul13A.FI01 interval 1 intcount 1
control station *ATM* , qread $OSS.Jul13A.FI02 interval 1 intcount... (4 Replies)
Discussion started by: appu2176
4 Replies
7. Shell Programming and Scripting
Hi Unix experts
I have simple text files in which the number of lines vary from one file to another. They look like the following:
#
#
.
.
34 46
76 72
39 68
I want to grab the first number of the last line of each file (let's say A= 39 in the above example), which is... (2 Replies)
Discussion started by: nxp
2 Replies
8. Shell Programming and Scripting
Greetings, people of UNIX/Linux forums.
I am having a problem with a script, where I am trying to create a new variable. The value of this variable would be dependent on the value in a couple other previous variables (all variables are 2-digit integers). Here is my code:
#set the stations... (3 Replies)
Discussion started by: TheSMan5
3 Replies
9. UNIX for Advanced & Expert Users
Hi
Is there any command where we can insert a line "2|||" before every line starting with "3|"
my input is as follows
1|ETG|12345
3|79.58|||GBP||
1|ETG|12345
3|79.58|||GBP||
1|ETG|12345
2|EN_GB||Electrogalvanize 0.5 m2 ( Renault )
1|ETG|12345
3|88.51|||GBP||
desired output... (10 Replies)
Discussion started by: laxmi131
10 Replies
10. Shell Programming and Scripting
I have a file where each line starts with a "update" statement. I want to insert a new line, after each line, with the words "go" in the new line. Can someone help me out with this? (1 Reply)
Discussion started by: ssmallya
1 Replies
mktemp(1) User Commands mktemp(1)
NAME
mktemp - make temporary filename
SYNOPSIS
mktemp [-dtqu] [-p directory] [template]
DESCRIPTION
The mktemp utility makes a temporay filename. To do this, mktemp takes the specified filename template and overwrites a portion of it to
create a unique filename. See OPERANDS.
The template is passed to mktemp(3C) for directories or mkstemp(3C) for ordinary files.
If mktemp can successfully generate a unique filename, the file (or directory) is created with file permissions such that it is only read-
able and writable by its owner (unless the -u flag is given) and the filename is printed to standard output.
mktemp allows shell scripts to safely use temporary files. Traditionally, many shell scripts take the name of the program with the PID as a
suffix and used that as a temporary filename. This kind of naming scheme is predictable and the race condition it creates is easy for an
attacker to win. A safer, though still inferior approach is to make a temporary directory using the same naming scheme. While this guaran-
tees that a temporary file is not subverted, it still allows a simple denial of service attack. Use mktemp instead.
OPTIONS
The following options are supported:
-d Make a directory instead of a file.
-p directory Use the specified directory as a prefix when generating the temporary filename. The directory is overridden by the
user's TMPDIR environment variable if it is set.This option implies the -t flag.
-q Fail silently if an error occurs.This is useful if a script does not want error output to go to standard error.
-t Generate a path rooted in a temporary directory. This directory is chosen as follows: If the user's TMPDIR environ-
ment variable is set, the directory contained therein is used. Otherwise, if the -p flag was given the specified
directory is used. If none of the above apply, /tmp is used. In this mode, the template (if specified) should be a
directory component (as opposed to a full path) and thus should not contain any forward slashes.
-u Operate in unsafe mode. The temp file is unlinked before mktemp exits. This is slightly better than mktemp(3C),
but still introduces a race condition. Use of this option is discouraged.
OPERANDS
The following operands are supported:
template template can be any filename with one or more Xs appended to it, for example /tmp/tfile.XXXXXX.
If template is not specified, a default of tmp.XXXXXX is used and the -t flag is implied.
EXAMPLES
Example 1: Using mktemp
The following example illustrates a simple use of mktemp in a sh(1) script. In this example, the script quits if it cannot get a safe tem-
porary file.
TMPFILE=`mktemp /tmp/example.XXXXXX`
if [ -z "$TMPFILE" ]; then exit 1; fi
echo "program output" >> $TMPFILE
Example 2: Using mktemp to Support TMPDIR
The following example uses mktemp to support for a user's TMPDIR environment variable:
TMPFILE=`mktemp -t example.XXXXXX`
if [ -z "$TMPFILE" ]; then exit 1; fi
echo "program output" >> $TMPFILE
Example 3: Using mktemp Without Specifying the Name of the Temporary File
The following example uses mktemp without specifying the name of the temporary file. In this case the -t flag is implied.
TMPFILE=`mktemp`
if [ -z "$TMPFILE" ]; then exit 1; fi
echo "program output" >> $TMPFILE
Example 4: Using mktemp with a Default Temporary Directory Other than /tmp
The following example creates the temporary file in /extra/tmp unless the user's TMPDIR environment variable specifies otherwise:
TMPFILE=`mktemp -p /extra/tmp example.XXXXX`
if [ -z "$TMPFILE" ]; then exit 1; fi
echo "program output" >> $TMPFILE
Example 5: Using mktemp to Remove a File
The following example attempts to create two temporary files. If creation of the second temporary file fails, mktemp removes the first file
before exiting:
TMP1=`mktemp -t example.1.XXXXXX`
if [ -z "$TMP1" ]; then exit 1; fi
TMP2=`mktemp -t example.2.XXXXXX`
if [ -z "$TMP2" ]; then
rm -f $TMP1
exit 1
fi
Example 6: Using mktemp
The following example does not exit if mktemp is unable to create the file. That part of the script has been protected.
TMPFILE=`mktemp -q -t example.XXXXXX`
if [ ! -z "$TMPFILE" ]
then
# Safe to use $TMPFILE in this block
echo data > $TMPFILE
...
rm -f $TMPFILE
fi
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of mktemp with the -t option: TMPDIR.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
1 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO
sh(1), mkstemp(3C), mktemp(3C), attributes(5), environ(5)
NOTES
The mktemp utility appeared in OpenBSD 2.1. The Solaris implementation uses only as many `Xs' as are significant for mktemp(3C) and
mkstemp(3C).
SunOS 5.10 4 Jun 2004 mktemp(1)