Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

awk syntax error with ssh

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting awk syntax error with ssh
# 1  
Old 08-28-2013
awk syntax error with ssh
I am attempting to ssh to a server and grab the line from /etc/group if it contains a specific GID.

Example line from /etc/group:
Code:
mysql:!:64600:mysql

Run locally on <host>:
Code:
# awk -F: '$3 == 64600 {print $1}' /etc/group
mysql

Attempt to ssh to <host> and execute:
Code:
# ssh <host> awk -F: '$3 == 64600 {print $1}' /etc/group
Syntax Error The source line is 1.
The error context is
>>> == <<<
awk: 0602-500 Quitting The source line is 1.

Enclosing the command in single or double quotes gives the same error:
Code:
# ssh <host> "awk -F: '$3 == 64600 {print $1}' /etc/group"
Syntax Error The source line is 1.
The error context is
>>> == <<<
awk: 0602-500 Quitting The source line is 1.

I figure it has to have something to do with the expansion of $3 before the command is passed to <host> but I can't figure out how to protect it.

Help? Please?
# 2  
Old 08-28-2013
Code:
 ssh somenode "awk -F':' '\$1==\"jmcnama\" {print $1}' /etc/group"

works fine for me. SHELL==/bin/bash
# 3  
Old 08-28-2013
A clumsy method is to replace the ' by '\'' and put the remote command in ' '.
Code:
ssh <host> 'awk -F: '\''$3 == 64600 {print $1}'\'' /etc/group'

The better method:
put the normal command in a script cmd.sh
Code:
#!/bin/sh
awk -F: '$3 == 64600 {print $1}' /etc/group

and execute it remotely
Code:
ssh <host> /bin/sh  < cmd.sh

This User Gave Thanks to MadeInGermany For This Post:
port43
# 4  
Old 08-29-2013
Thanks Jim, it works for executing the command but I'm using ksh and as soon as I try and put it in a variable it errors:
Code:

# AUDITGROUP=`ssh ${SRV} "awk -F':' '\$3==\"64600\" {print $1}' /etc/group"`
Syntax Error The source line is 1.
The error context is
>>> == <<<
awk: 0602-500 Quitting The source line is 1.

---------- Post updated at 12:09 PM ---------- Previous update was at 12:05 PM ----------

Thanks MiG. It works and although it might appear "clumsy" I prefer that so I don't have to remember to include the cmd.sh file if I copy the base script to another server.
Last edited by port43; 08-29-2013 at 01:15 PM..
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Awk: syntax error

awk -F, ' NR>1 { BEGIN{ chr=$2 } END{ for (k in chr) {print k} } } ' $gene_file I've a really simple code. I want to store gene name and it's chromosome and in the end print them. I'm skipping line one as it contains headers. But I don't know why I get error as: (2 Replies)
Discussion started by: genome
2 Replies

2. Shell Programming and Scripting

Syntax error in awk

I know the below code worked, but the syntax appears to be wrong and I can not seem to correct it. Thank you :). awk 'FNR==NR {E; next }>$3 in E {print $3, $5}' medical_exome__genes.txt RefSeqGene.txt > update.txt awk: cmd. line:1: FNR==NR {E; next }>$3 in E {print $3, $5} awk: cmd.... (2 Replies)
Discussion started by: cmccabe
2 Replies

3. Shell Programming and Scripting

awk if else syntax error

Could somebody gently point out the error of my ways in the below (the flu I'm fighting might be contributing to my current haplessness) awk -F="\t" \ '{ for (i = 1; i <= NR; i++); FNR == i; { if (length($3) < 56 && length($1) > 56) $1=($1" "$2); $2=$3; $3=$4; ... (1 Reply)
Discussion started by: Andrew767
1 Replies

4. Cybersecurity

SSH syntax error

I have been asked to look at a problem with implementing SSH on an HP-UX server which a colleague has set up. Users connect through PuTTY. When I try to establish a connection I see the following message: Usage: -ssh host Options: -l user Log in using this user name. -n ... (6 Replies)
Discussion started by: j_wealleans
6 Replies

5. Shell Programming and Scripting

awk syntax error

Hi All, I wrote a simple script.sh program for i in seq (22) do awk '$1==${i}' file1.txt|awk '{print $2}'> file${i}_study.txt done and then run it %bash %chmod +x script.sh % ./script.sh Give me error awk: $1==${i} awk: ^ syntax error Do you have any idea why... (3 Replies)
Discussion started by: senayasma
3 Replies

6. Shell Programming and Scripting

Syntax error using Awk

more report2.txt how to modify the AWK to print above out put for given n no of inputs using report2.txt file? out put should be (3 Replies)
Discussion started by: kanakaraju
3 Replies

7. Shell Programming and Scripting

awk syntax error

Hi, I can't see what is wrong with the following command. I am extracting a dollar amount (AMT_REJ, 6th field) from a comma delimited record and need to output it as numeric, removing the $sign and decimal point and output to another file. Everything seems to work except the $ sign which I need... (1 Reply)
Discussion started by: ski
1 Replies

8. UNIX for Dummies Questions & Answers

awk Shell Script error : "Syntax Error : `Split' unexpected

hi there i write one awk script file in shell programing the code is related to dd/mm/yy to month, day year format but i get an error please can anybody help me out in this problem ?????? i give my code here including error awk ` # date-month -- convert mm/dd/yy to month day,... (2 Replies)
Discussion started by: Herry
2 Replies

9. UNIX for Dummies Questions & Answers

'awk' syntax error

Due to some syntax error, my below code is not working. #!/usr/bin/ksh nawk ' BEGIN { cur_val=0; cur_zero=0; cur_nine=0; sum_zero=0; sum_nine=0; } /^/ { cur_val=substr($0,5,2); if("cur_val" == "0") { ... (3 Replies)
Discussion started by: lokiman
3 Replies

10. UNIX for Dummies Questions & Answers

awk syntax error

can anyone see the awk syntax error near line 1? I keep getting this error and I'm not familiar with awk very well yet so it is hard for me to see the errors. fyi: deleteuser* refers to files in the directory where each one ends with a different date ls -1 /mfupload/prod02/ftp/deleteuser* |... (12 Replies)
Discussion started by: k@ssidy
12 Replies
Login or Register to Ask a Question