Sponsored Content
Full Discussion: set sub-string as variable
Top Forums UNIX for Dummies Questions & Answers set sub-string as variable Post 302437074 by tedy2808 on Wednesday 14th of July 2010 01:14:27 AM
Old 07-14-2010
set sub-string as variable

ok...i've edited my script and i got my desired output..
but the position of the string is always changes..Thus the script is no longer efficient.It may output wrong result. i'm thinking of creating a script that can read the exact sub-string that i wanted...let say from the whole line, i want to capture only "my file name"..instead of i have to set the position.

maybe in the log file, the last line has long/many words,so i just wanted to capture certain word in order for me to assign it as variable..
i've tried to search and did some try an error but still doesn't work.. any idea?


Code:
#!/bin/sh
  dir=/home/user/input/test.log

#cat $dir

msg=`tail -1 $dir`
sub=`echo ${msg:6:23}` 
echo "$sub"

#name=${msg:0:21}


echo "$msg"
#echo "$name"


Last edited by pludi; 07-14-2010 at 03:55 AM.. Reason: code tags, please...
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Export command giving Variable Name vs the Value set for the Variable

I'm having an issue when I export within my program. I'm getting the variable name, not the variable value. I have a configuration file (config.txt) that has the values of the variables set as so: set -a export ARCHIVEPOSourceDir="/interfaces/po/log /interfaces/po/data" export... (2 Replies)
Discussion started by: ParNone
2 Replies

2. Shell Programming and Scripting

set variable with another variable? c shell

okay, this shouldn't be difficult but I can't figure it out. How can I set a variable with another variable. I have the following: foreach pe ($dir $sp) set tpe = `echo $pe | grep M` if ($tpe == M) then set ${$pe} = M <--- This doesn't work else endif end In this case what... (2 Replies)
Discussion started by: wxornot
2 Replies

3. Shell Programming and Scripting

how to find a particular string from a set of string output

Hi , I have a line by line output as follows,for example output of ls sample1 sample2 sample i need to check if this output contains the exact string sample.If i use grep , it will find out all strings that contain sample as a part of their word.I dont want to do a pattern matching... (11 Replies)
Discussion started by: padmisri
11 Replies

4. Shell Programming and Scripting

Howto set string variable in TCL?

Anyone knows how to set variable in TCL ? let say i have a password variable and it will have different values. set variable and variable has different values like: xxxx yyyy zzzz (0 Replies)
Discussion started by: linuxgeek
0 Replies

5. Shell Programming and Scripting

BASH - set specific user variable via string operators

Apologies for the utter triviality of this question, but we all have to start somewhere! I've also tried searching but this question is pretty vague so I didn't (a) really know what to search for or (b) get many relevant hits to what I did search for. Anyway, I'm in the process of self-teaching... (1 Reply)
Discussion started by: u5j84
1 Replies

6. HP-UX

What is the use of command set -- and set - variable?

Hi, I am using hp unix i want to know the use of the following commands set -- set - variable thanks (4 Replies)
Discussion started by: gomathi
4 Replies

7. Shell Programming and Scripting

replace (sed?) a string in file with multiple lines (string) from variable

Can someone tell me how I can do this? e.g: a=$(echo -e wert trewt ertert ertert ertert erttert erterte rterter tertertert ert) How do i replace the STRING with $a? I try this: sed -i 's/STRING/'"$a"'/g' filename.ext but this don' t work (2 Replies)
Discussion started by: jforce
2 Replies

8. UNIX for Dummies Questions & Answers

Comparing a String variable with a string literal in a Debian shell script

Hi All, I am trying to to compare a string variable with a string literal inside a loop but keep getting the ./testifstructure.sh: line 6: #!/bin/sh BOOK_LIST="BOOK1 BOOK2" for BOOK in ${BOOK_LIST} do if then echo '1' else echo '2' fi done Please use next... (1 Reply)
Discussion started by: daveu7
1 Replies

9. Shell Programming and Scripting

If a string variable value exists in a set of values

Can some one please help me with the syntax in shell script for the below : if $var1 exists in ('val1','val2','val3') I want to execute a set of commands if the value of var1 variable matches any one of the given string values. Please let me know if there are any other option to go by. ... (10 Replies)
Discussion started by: Pandee
10 Replies

10. UNIX for Beginners Questions & Answers

Check if string variable is a subset of another string variable

Below is my ksh shell script where I need to check if variable fileprops is a subset of $1 argument. echo "FILE PROPERTY: $fileprops" echo "PARAMETER3: $1" if ; then echo "We are Good. $line FILE is found to be INTACT !! " else echo... (2 Replies)
Discussion started by: mohtashims
2 Replies
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)
All times are GMT -4. The time now is 04:58 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy