Strings are typically delimited by quotes, which raises the problem of dealing with strings that include quotes.

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-1
votes
1answer
52 views

How to grep and treat meta character as normal character?

I am trying to recursively find some pattern which contains meta character. Pattern that I searching for is template <int N> I have tried : grep -F -lir "template <int N>" * # ...
7
votes
1answer
134 views

How to extract the string between two \n in a file

I have a file with pattern <span class="WebRupee">Rs.</span>\n29\n<br/><font style="font-size:smaller;font-weight:normal">\n3 days\n</font></td>, <td class=...
2
votes
1answer
60 views

Why do my single quotes vanish on substitution with sed

What is the right command for: sudo sed -i '/, false);/adefine( 'WP_MEMORY_LIMIT', '64M' );' /var/www/html/wp-config.php The result is: define( WP_MEMORY_LIMIT, 64M ); instead of the desired: ...
1
vote
2answers
42 views

Quoting the output of a backtick command [duplicate]

I'm trying to run an expect script that runs a telnet session to automate the sending of an email, I'm trying to pass the contents of a file as a single argument to my script but when the backticks ...
-4
votes
1answer
49 views

What can single quote mean specially within double quotes? [closed]

From bash manual Enclosing characters in double quotes (‘"’) preserves the literal value of all characters within the quotes, with the exception of ‘$’, ‘‘’, ‘\’, and, when history expansion ...
2
votes
1answer
50 views

using sed with ampersand (&)

i'm using sed to find and replace patterns within SAS files i have rather than changing them individually. The problem is I am trying to replace macro variables and when i use the ampersand it is not ...
3
votes
2answers
46 views

Problem with spaces when used in find command

I'm trying to place a zip file with the content of the directory in each directory that doesn't contain any subdirectory. The following command works if there's no space in dirnames and/or filenames ...
4
votes
2answers
78 views

How to use a special character as a normal one?

Many questions like 'How to type the double-quote char (")?' are being asked, and we don't want to clutter our community with the same answer (Type it as \" if not enclosed in 's, " if enclosed in 's.)...
3
votes
1answer
25 views

Loop over a string in zsh and Bash

I would like to convert this Bash loop: x="one two three" for i in ${x} do echo ${i} done in such a way to work with both Bash and zsh This solution works: x=( one two three ) for i in ${x[...
0
votes
1answer
37 views

how to properly pass _set_ of parameters with spaces into shell function

My problem is not simple passing parameters with spaces (I know how to achieve that), consider more complicated case: function build() { make CC="$1" CFLAGS="$2" $* # $* is not correct here! } ...
0
votes
2answers
75 views

Wildcard not working in quotes

The script is supposed to loop over subdirectories and match all the filenames (FLA.*Image.*file.jpg and FLA.*Image.jpg) in subdirectories and process it. It also create output folder inside the ...
1
vote
1answer
59 views

How do I rename files that have '|' in them?

I am using Fedora 24. I have tried many different ways to do this. I've tried it under a Windows VM with the folder in question as a shared folder. I've tried using the 'rename' command. I've ...
1
vote
1answer
71 views

Why is find not listing matching files when preceded by an asterisk(*)? [duplicate]

On Ubuntu 14.04, 64 bit, I have set /lib/modules/4.2.0-27-generic/kernel/drivers to be my current directory. I intend to search all files having net present as a sub-string. If I search with a regex ...
3
votes
2answers
72 views

confused with awk and shell variables

I am trying to run a script that uses awk. There is no error it seems, but it doesn't create the file that I want. This is the script: #!/bin/bash echo "Number of domain:" read number echo "Domain ...
3
votes
1answer
20 views

How can I escape an exclamation point in the PS1 environment variable?

It is substituted with the history number even if I try to escape it with a backslash.
8
votes
5answers
674 views

How to find lines that begin with **

I need to find if any lines in a file begin with ** . I cannot figure out how to do it because * is interpreted as a wildcard by the shell. grep -i "^2" test.out works if the line begins with a 2 ...
2
votes
2answers
45 views

Command behavior is different when executed by an other user (via su -c)

I want to kill every processes who match a specific chain. Here is my script, which works pretty well: echo `ps aux | grep verySpecificChain | grep -v grep | /usr/bin/awk '{ print $2 }'` | xargs kill ...
0
votes
1answer
71 views

Curl a string with whitespaces and characters in it? [duplicate]

I'm trying to create a "simple" script that I'm going to use to create some documentation for Unix/Mac machines. I've successfully received the information I need, but it seems like I can't send it ...
5
votes
2answers
374 views

nested double quotes in highly-voted one-liner

A StackOverflow answer with > 3.5K votes features this one-liner for assigning to DIR the directory of the current bash script: DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" I'm ...
10
votes
4answers
1k views

Why does cut fail with bash and not zsh?

I create a file with tab-delimited fields. echo foo$'\t'bar$'\t'baz$'\n'foo$'\t'bar$'\t'baz > input I have the following script named zsh.sh #!/usr/bin/env zsh while read line; do <<&...
2
votes
1answer
34 views

Cannot stop bash to expand star (wildcard character) passed to app from shellscript

I have a shell bash script wich should pass the star ["*"] wildcard character to an application without using quotation marks. I am reading since hours and always find to use "set -f" inside the ...
1
vote
1answer
74 views

Bash Function Parameters - Spaces in Filename [duplicate]

I know there are rules for quoting parameters, but no matter what I try, I can't seem to figure out how to make this work. I have a function that takes a single filename as a parameter, then uses ...
0
votes
2answers
56 views

To include double quotes within a string

My command is X=`ssh ${OS_USER}@${OS_HOST} ". ~/.kshrc ; ulimit -c unlimited ; cd ${OS_PATH}/NEW_BL1_RC_RATE/bin/conf; echo "export RC_DB_INSTANCE=$7" >> RC_CONV_SET_VARS"` $7 should ...
1
vote
4answers
66 views

execute command over ssh connection [duplicate]

I want to excecute the following command over a ssh connection: tmpValue=$(cat /var/run/jboss-as/jboss-as-standalone8.pid) && top -b -U jboss -n 1 |grep $tmpValue |awk '{print $9}' This ...
2
votes
1answer
35 views

How to get a list to be entered in quotes

firstly I am a total n00b with scripting, so please forgive any incorrect terminology. I have a simple script that runs a python script (used to deduplicate emails via IMAP) after a user has entered ...
1
vote
3answers
45 views

Unable to use a escape sequences in a variable in a sed command

I'm using sed to highlight a column in the output of a ps command, and it works fine if I hard code the color code. However, the color needs to be dynamic, so I tried moving it to a variable, and ...
2
votes
2answers
112 views

Why won't this bash command run when called by python?

The command $ find ~/foo/ -type f -iname "*.txt" -print0 | parallel -0 cat uses GNU Parallel to print all the .txt files under ~/foo/. I have a python script where I want to call this bash ...
0
votes
3answers
77 views

How do I remove a dot dollar no name directory

I have this weird directory in Oracle Linux that I cannot remove, cannot change owner, cannot change group, etc. It seems to be an environment variable that is empty and is named: .$EXTEND Here's ...
0
votes
1answer
44 views

globbing and wildcards

Are wildcards ever supposed to be expanded for a program that is not the first in the pipeline? Every example uses wildcard for the first program in the pipelilne. For example, the following does ...
0
votes
3answers
80 views

Right syntax for awk usage in combination with other command inside xargs sh –c

How to make this command work: ls * | xargs -I {} sh -c 'echo {}; awk '{print $1}' {} | uniq' It should do the simple thing: print for each file in the folder its name and uniq values in the first ...
2
votes
1answer
25 views

Why is a daily .zshrc reload required using an alias containing $(date -u +%Y%m%d)? [closed]

Each morning I run the following command that tails a log file created daily: ssh -t server@55.555.55.55 tail -f development/abc/$(date -u +%Y%m%d).log This works just fine and each morning the log ...
3
votes
1answer
111 views

Syntax error with variable containing quotes

I have a bunch of Linux machines behind 2 gateways. To connect to set one I do ssh -o ProxyCommand="ssh gateway1 nc %h %p" machines_behind_1 ssh -o ProxyCommand="ssh gateway2 nc --proxy %h %p --...
0
votes
1answer
54 views

syntax error: unterminated quoted string when using regexp_replace in bash script

I've added some code to the end of a bash script I am using. The code shown here is intended to copy a csv into my postgres table, and then remove brackets, quotes and double quotes from the title ...
2
votes
1answer
47 views

Passing a git command as an argument

I'm trying to automate some tedious parts of a student job I'm working on. Basically, the goal is to clone a bunch of git repositories (which I already have working), then run the same git checkout ...
0
votes
1answer
60 views

command substitution - cat file inserts quotes

In bash, given these files: $ cat noquotes.txt s/a/b/g $ cat quotes.txt "s/a/b/g" Why does $ echo "aaa" | sed -e $(cat noquotes.txt) bbb succeed, but $ echo "aaa" | sed -e $(cat quotes.txt) sed:...
7
votes
1answer
1k views

Why does `grep fil*` fail?

I found echo file|grep fil* fails, but echo abcd|grep abc* succeeds. I don't understand it, can someone explain? Thanks
4
votes
2answers
60 views

Store quotes in variable to use as command line parameter Bash

I am writing a script to call a command (weka, if you are curious) a couple of times with some different parameters. One of the parameters, '-search "< stuff >" ' needs to be quoted. In some ...
0
votes
1answer
69 views

grep with variable in a variable

I want to filter the svlog file by date and split the result by the space, so when i enter the date, it didn't work for me, please refer to the script that I wrote below, the problem was in this ...
1
vote
1answer
48 views

Rewrite a find command that uses sed -i for AIX

I have a script that searches for a string and replaces it via the sed command. If that string contains special characters, the script will escape them (except for the slash because it's my current ...
1
vote
2answers
110 views

Shell eating `?` characters

This is such a simple question that I'm sure it's been asked somewhere, but I can't find it. My shell, which I have not intentionally set up to do so, seems to eat any words involving question marks: ...
0
votes
0answers
32 views

Why do konsole expand $VAR inside single quotes in <-e> command line option?

I want to print a string and be sure all $VARs inside it are not expanded to their values. That's why I enclose my text in single quotes. Example: echo '$SHELL';read -sn 1 This command displays ...
0
votes
0answers
13 views

Bash script not passing variable through ssh [duplicate]

I'm trying to write a script that will ssh into multiple servers and echo the line user_pref("plugin.state.java",2) into every user's firefox pref.js file. I keep getting the error bash: /home//....
1
vote
2answers
63 views

Define a variable to awk pattern matching from bash

I am trying to grab 100 lines after the text "time: X" with X in {0,40,80,...,200}. Here is what I have so far: #!/bin/bash start=1 end=5 for i in $(seq $start $end);do j=$(($i*40)) awk '/time: ...
1
vote
0answers
38 views

Passing external parameter to .exe on Windows using winexe from Linux

I am trying to execute a .exe on Windows from Linux using winexe. This exe requires an external parameter (string) to be fed alongwith. With the following command I have succeeded in initialising the ....
2
votes
4answers
721 views

Why does the grep command ignore the period in the search string?

The command that I am using: find . -type f -name "*.sql" -exec grep -i -l 'schema_name.' {} + What I want to search is all the files which contain schema_name.. But the find command is ignoring ...
1
vote
2answers
99 views

Escaping in bash

Given a text message, I need to programmatically generate a bash command to open terminal emulator and show this text in it. For example, for HelloWorld input string I need to return the following ...
1
vote
1answer
80 views

regular expression : with a variable

arrFormat=( jpg jpeg bmp tiff png ) varExtension="jpg" for elem in "${arrFormat[@]}" do   echo "${elem}"   # do something on $elem # done #for i in $( find -E . -iregex '.*\.($arrFormat)' ) ; do ...
0
votes
1answer
88 views

How do I accept input string in bash without losing the quotes?

Example, I have this function in my .profile: alias () { command alias "$@" } However, this executes: $ alias test=ls if I run $ alias test="ls" How can I make it accept the string with ...
16
votes
1answer
1k views

Why does this ffmpeg command work in bash and not zsh?

Today I got home from work (run bash on an Ubuntu box) and tried to run some code on my local arch box with my beloved zsh and the commands were failing? The command is below with the personal info ...
1
vote
2answers
85 views

Why some commands don't load user environment when executed with ssh? (while other do)

On a target machine (OS X El Capitan) I have brew in /usr/local/bin. When I try to get brew's path I get no result: # ssh vagrant@127.0.0.1 -p 2222 which brew # Troubleshooting: brew is in /usr/...