linux - Bash - Executing a command in a script adding single quotes to a variable containing spaces -

-

i writing script executes necessary commands train tesseract language , want receive font argument (e.g.: dejavu sans bold) , execute command text2image --text=trainingfile.txt --outputbase=eng.dejavusansbold.exp0 --font='dejavu sans bold' --fonts_dir=/usr/share/fonts. notice --font='dejavu sans bold' has font name single quoted. since receive font argument, need add quotes , use name.

after different approaches, "most effective" attempt text2image --text="${trainingtextfilename}" --outputbase="${languagecode}"."${fontnamewithoutblanks}".exp0 --font="'""${fontname}""'" --fonts_dir=/usr/share/fonts still not working... ("languagecode" , "fontnamewithoutblanks" other variables).

after running script line, notification saying font not recognized although works when execute "manually" in console. using set -x , set +x line (of script) looks this: text2image --text=contenttraint.txt --outputbase=gdfdd.dejavusansbold.exp0 '--font='\''dejavu sans bold'\''' --fonts_dir=/usr/share/fonts. have no idea how go away quotation added because of spaces...

can me, please?

be clear command want execute. when type

text2image --text=trainingfile.txt --outputbase=eng.dejavusansbold.exp0 \     --font='dejavu sans bold' --fonts_dir=/usr/share/fonts

to shell, happens shell invokes command text2image 4 arguments: --text=trainingfile.txt,
--outputbase=eng.dejavusansbold.exp0,
--font=dejavu sans bold, --fonts_dir=/usr/share/fonts.

the purpose of single quotes tell shell --font=dejavu sans bold 1 argument. in order answer question, though, need know how executing command (ie, need show code). if have font name in variable $font, do:

text2image --text=trainingfile.txt --outputbase=eng.dejavusansbold.exp0 \     --font="$font" --fonts_dir=/usr/share/fonts

if font passed script argument, do:

font=$1 text2image ... --font="$1" ...

if constructing command more dynamically, may need else.


Comments

Post a Comment

Popular posts from this blog

Spring Boot + JPA + Hibernate: Unable to locate persister -

-
i trying work entity inside request method of spring boot application. entity in project , pom.xml has dependencies it. why error message?: org.hibernate.unknownentitytypeexception: unable locate persister: com.ric.bill.model.bs.par package com.ric.web; import java.util.concurrent.atomic.atomiclong; import javax.persistence.entitymanager; import javax.persistence.persistencecontext; import net.sf.ehcache.cachemanager; import net.sf.ehcache.management.cache; import net.sf.ehcache.management.cachestatistics; import org.hibernate.stat.statistics; import org.springframework.beans.factory.annotation.autowired; import org.springframework.boot.autoconfigure.domain.entityscan; import org.springframework.cache.annotation.enablecaching; import org.springframework.transaction.annotation.enabletransactionmanagement; import org.springframework.transaction.annotation.propagation; import org.springframework.transaction.annotation.transactional; import org.springframework.web.bind.annotati...
Read more

go - Golang: panic: runtime error: invalid memory address or nil pointer dereference using bufio.Scanner -

-
i implementing go program uses bufio.scanner , bufio.writer have packaged code follows package main import ( "fmt" "player/command" "strings" ) func main() { //enter code here. read input stdin. print output stdout commands.scanner.scan() { //scan new line , send comand variable check command exist or not input := strings.split(strings.trim(commands.scanner.text(), " "), " ") command := input[0] if command == "" { fmt.printf("$ %s:", commands.pwd) continue } if !commands.commands[command] { commands.throwerror("cannot recognize input.") } else { commands.execute(command, input[1:], nil) } fmt.printf("$ %s:", commands.pwd) } } i using init.go file in main package follows package main import ( "flag" "player/sourc...
Read more

c - double free or corruption (fasttop) -

-
this code reads null terminated string file (file containing null terminated strings & should provide index wanted string). error: *** error in `./main': double free or corruption (fasttop): 0x090a4a80 *** aborted code: char *tmp_realloc=null; char *sstring=null; int i=1; /*set file pointer point string*/ fseek(fh,index,seek_set); sstring=(char*)malloc(sizeof(char)); if(sstring == null) return null; tmp_realloc=sstring; while( (*(sstring+i-1)=(char)fgetc((file*)fh)) != 0x0 ) { /*reallocate more memory*/ tmp_realloc=(char*)realloc((char*)sstring,++i); /*if not same address copy old new & set old point new*/ if(tmp_realloc != sstring){ strcpy((char*)tmp_realloc,(char*)sstring); free(sstring); sstring=tmp_realloc; } } could tell me pointer causing issue (& reason) ? remove part /*if not same address copy old new & set old point new*/ if(tmp_realloc != sstring){ strc...
Read more