The Korn shell (ksh) is a shell with advanced scripting features, commonly found on commercial unices and some BSD systems but rarely used on Linux.

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How do I use sudo to run multiple commands as another user within a portion of a script?

I'm trying to run the following: if [! -f .owner ]; then creator=$(whoami) sudo -u appuser ksh echo "$creator" >> .owner mkdir test1 test2 test3 exit fi However, the ...
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19 views

How to check a ksh script for syntax errors?

$ cat foo.sh #!/bin/ksh echo foo ehco foo2 It doesn't warns for errors: $ /bin/ksh -n foo.sh $ echo $? 0 Question: How can I get the "ksh -n" to warn me about syntax errors?
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14 views

aix ksh start weblogic server without nohup.out and return to underlying script

I am writing a ksh script, in which I want to start weblogic server in background and return to underlying script immediately(continue to execute the script) like this: nohup ...
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159 views

how to return to underlying script from tail -f

I have a ksh script, in which I use tail -f to view a log file. How can I terminate the tail process, and continue executing the underlying script? I am running it on AIX 7.1. ...
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3answers
173 views

Shell script not executing

Not sure what is happening. Lets call script a.sh with the following /users/guru$ cat a.sh #! /usr/bin/ksh echo "Hello" date Execute with ksh. It gets done. /users/guru$ ksh a.sh Hello Tue Jul ...
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3answers
71 views

Problem when splitting command with backslash in unix prompt

I often use the space-backslash combination ( ) to split a command and its parameters into various lines and make it more readable: /home/user> ls -ltra \ > file1.txt \ > file2.txt ...
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34 views

what's the right pattern to match my command

OS: AIX 7.1 I am working on a shell script which let user input some command and execute it, one of the commands is in this form: compile appname the appname only can be one of [ccms|asws], what's ...
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50 views

how to get exit status from command in expect script

Below is an shell script I have written to automate entering the password for the vpnc command. The expect works fine and vpnc activated automatically after password entered, but I need to get the ...
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29 views

Sed + how to set parameters in sed command in order to display lines from text file

I find the following way to print line from file In this example we want to print the first line from the hosts file sed -n '1,1p' /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 ...
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33 views

Error unzipping file through ksh, unzip works through bash

I have an auto-generated zipfile foo.zip on a Red Hat server that needs to be extracted to a particular location /bar. This is done through an install script using ksh. When the script executes unzip ...
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71 views

Aix grep wildcard not working

I have a file called message that has the line CSC/UT/USA/WBIMB/SAP/orders05:orders05/ORDERS05/NONE/ORDRSP/758 I am doing a grep (Platform is AIX 6.1) grep ...
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47 views

How to convert text or character to hex in korn shell

Does the unix korn shell provide a function to convert text or character to hex eg. hex 31 32 37 33 34 35 35 36 36 37 value of characters 1273455667 Here i have written the code to display but i don't ...
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112 views

Get values block by block in same file

I have a file say "SAMPLE.txt" with following content, P1 10,9:6/123456 P2 blah blah P1 10,9:5/98765 P2 blah blah P1 blah blah P2 I want a output file say "RESULT.txt" as, Value1:123456 ...
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1answer
257 views

-ksh: revenue_ext.ksh: not found [No such file or directory]

I am getting the same not found [No such file or directory] error when trying to execute a ksh script. Read tips about the PATH and running the script with a ./ in the posts here and here and tried ...
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1answer
50 views

Using kornshell or Perl to circumvent permissions needed by root

I have a problem where I need to change the ownership and permissions of one file that exists on more than 200 servers. I belong to 2 different groups and need to change the ownership from one group ...
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0answers
28 views

Learning to use ksh88 in HP-UX [closed]

I am just a plain Linux user who played some distros since 2-3 years. Now, in the company I work there's an HP-UX server. And when I get connected to it I really felt myself like a grandma seeing ...
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1answer
22 views

KSH script missinterpreting alias stored in SQL oracle DB

I have stored the path of my file in a table with as an alias (as the complete path was too long for the table's field). However, in my KSH script, when I am doing : nomtmp=`sqlplus -S bla/bla ...
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1answer
41 views

Trying to compare a variable that is multiline in a if comparison

Here is the current file I am running: #!/bin/ksh -x export BIN_DIR="../../env" . $BIN_DIR/vdenv.ksh success="DROP CREATE TABLE GRANT" $worker_dir/runsql.ksh ddl X X > chnl_avt_v1.log ...
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1answer
49 views

ksh, perform action when reaching loop maximal value

I am looking to write a small korn shell script doing 5 tests (by waiting some time before each one) and then, if they all fail, performing an action. I was looking at doing something like : for ...
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1answer
182 views

Where is $_ defined by POSIX?

In the comments to the accepted answer to this Unix & Linux StackExchange question, it is stated that $_ is "one of only some 7 special parameters defined by POSIX". I can't find that definition ...
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1answer
63 views

Is there an advantage in using ksh over zsh? [closed]

Or are there any advantages for using ksh over zsh? Would any specific commands not execute successfully across the shells or are the major differences not command related, but something else?
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2answers
179 views

KSH while loop causing issues

Hi guys I'm getting this error message when running my KSH script: ./file.sh: line 16: syntax error at line 22: `done' unexpected My code is as follows: #!/bin/ksh # count=$# #count is ...
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2answers
117 views

How to reset the file descriptor

I was trying to use file descriptor for printing the lines in the file #!/usr/bin/ksh exec 3<&0 exec 0< file.txt while read LINE do echo “$LINE” done and I am done with my code ,it ...
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3answers
227 views

Print the last-but-one field

How to print the word before the last word in line (with ksh or awk or sed or perl one liner) Example 1: echo one two three will print "two" Example 2: echo 1 2 3 4 5 6 will print "5"
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91 views

get arguments passed and put it in an array

is there a way to make the arguments passed become the element of an array? I want to access those arguments individually through array. like this: ./script.ksh arg1 arg2 arg3 then it will become ...
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277 views

is there a “goto” like command in ksh

Here is my script: #!/bin/ksh #this is where I want to go again if user enter #an answer other than "yes or no" echo "yes or no?" read ans case $ans in [yY]*) echo "yes" ;; ...
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4answers
2k views

awk + print awk output in one line

When I run the following hasys command with awk , I get output with machines names as the following: hasys -display|grep Shutdown | awk '{print $1}' machine1a machine1b please advice how to ...
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253 views

Korn Shell: Show elapsed time in a specific format

In a log file, I need to print the Elapsed time, in the following format: "Process completed %s - Elapsed %s", <time now in HH:MM:SS format>, <difference from start date to end date in ...
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1answer
134 views

How to get the JSON STRING from the given string

I have a string given below. I just need to get the first accountHeader (bolded) JSON string, I tried everything.. It didn't work. Can you help me to get the data? <START ...
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2answers
51 views

Replacing a pattern with another between first and second occurrence of a pattern in file

Want the comma's (,) replaced by the alphabet u between the first occurrence of y till the second occurrence of y. Given below is the sample input file. 100y00893225900,008932259,06,2013,NOKIA Q ...
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203 views

perl one liners + match word and delete string after separator

I work with linux/solaris machines and I need to add some rule in my ksh script: Please advise how to match the password word in file, and delete the value password after the separator "=" with perl ...
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145 views

perl one liners + print line if match last word but with space

The following perl syntax will print the line in case line was ended with "DUPLEX" But Sometimes DUPLEX have one space or more as "DUPLEX " so in this case line will not printed Please ...
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48 views

Is this an array?

I'm currently looking at an existing script that have something like this: variable='val1 val2 val3 val4' Is this another way of setting an array? If not, what is it?
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1answer
48 views

Count number of elements in an array

I would like to ask if there is a way to count the number of elements in an array in ksh.
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88 views

Keeping the latest two version and delete the remaining

I have a list of files (say xsl format below) in one directory. I want to keep the last two version of all files. (I can delete the remaing files) {A}_1.0.xsl {A}_2.0.xsl {A}_3.0.xsl {A}_4.1.xsl ...
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49 views

Is there an equivalent to bash's “nocaseglob” in ksh?

I would like to do what is mentioned in How to match case insensitive patterns with ls? except for ksh. Is it possible to do it without any pain(regex)?
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1answer
32 views

Problematic quotations

#!/bin/ksh typeset FILE_SIZE1=$(stat -f '%z' test.txt); typeset -r BK_STATARGS="-f '%z'" typeset FILE_SIZE2=$(stat ${BK_STATARGS} test.txt); echo without arg var ${FILE_SIZE1} echo with arg var... ...
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2answers
65 views

Help with 64-bit integers in scripts?

Maybe I'm overthinking this (although I don't think I am)....or maybe there's a neater way of solving my problem ? I have a requirement that if a file is larger than 1GB, it gets split into smaller ...
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62 views

Truncating strings after a word in unix [closed]

I have a sentence Albert Einstein was born in Ulm, in the Kingdom of Württemberg in the German Empire on 14 March 1879. I want to truncate the above sentence after kingdom and look like the ...
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1answer
72 views

Crontab Triple Redirect

I have a very basic understanding of redirects, but I have come across a cronjob with redirects which I do not understand. 00 19 * * 1-5 /apps/app/scripts/doit.sh a np cron > ...
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3answers
177 views

Sort all directories based on their size

I'd like to sort all the directories/files in a specific directory based on their size (using du -sh "name"). I need to apply this command to all directories in my location, then sort them based on ...
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3answers
119 views

Quoting in command substitution

The command pdftk FileOne.pdf "File two.pdf" output Combined.pdf works as expected, merging PDF's One and Two. However, if I put the filenames in a file FileOne.pdf "File Two.pdf" and ...
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3answers
114 views

Display what has been copied by `cp` (using `ksh`)

I'd like to get output showing what has been copied by cp. The only problem is how to do it when I cp many files at a time. For instance, cp ./sourceDir/* $destinationPath/.
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1answer
93 views

What does Grep */* mean in KSH

In ksh, what does grep */*[myPattern] mean?
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2answers
88 views

Replicate a directory and file names n times

I have folder which has some data (files) in that with the name 201311261418 And a file 201311261418.eob In my scenario I need to replicate this folder and file names n times with the appended ...
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108 views

cp all files and subdirectories in a directory ksh

How can I do a cp to copy all files including all sub-directories in the current directory. I looked at the man page, but I can't figure out how to do it.
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3answers
74 views

Change value of a strings representing number

I have the following expression : a="2013" How can I change the value of a to "2012".
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234 views

Grep pattern in ksh [duplicate]

a small question regarding grep. I'm doing : find . -type d And I have three directories : ./backup-2013-11-27 ./backup-2013-11-26 ./backup-2013-11-28 If I only want to retrieve the one from ...
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49 views

Test what cd has done ksh

I'm facing a small issue here. I'm doing : cd $(find . -type d | grep "${4:0:4}.*${4:4:2}.*${4:6:2}") $4 is a data entered from the user. However, if the user doesn't respect the format to enter, ...
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119 views

ksh if with several conditions

I'd like to know what's the syntax for this kind of if in ksh : if [[ $tmpEngine != "a" || $tmpEngine != "b" || $tmpEngine != "s" ]]; then ... fi Actually, my code doesn't work, what's the ...